[HN Gopher] The almost-lost art of rosin potatoes
       ___________________________________________________________________
        
       The almost-lost art of rosin potatoes
        
       Author : classichasclass
       Score  : 121 points
       Date   : 2024-10-30 02:20 UTC (3 days ago)
        
 (HTM) web link (thecookscook.com)
 (TXT) w3m dump (thecookscook.com)
        
       | stewartbracken wrote:
       | if you break the skin, you cannot eat that potato
       | 
       | Be careful out there
        
         | ambyra wrote:
         | Yeah, like why would anyone want to revive toxic potatoes.
        
           | serf wrote:
           | because it's a unique taste , a unique method, and a cultural
           | significance for some people -- no one is forcing you to eat
           | it.
           | 
           | Why would anyone eat fugu or collect wild mushrooms?
           | 
           | It's fun and interesting. That's why. Danger be damned.
        
             | hansvm wrote:
             | The danger is part of the appeal. When somebody gives you a
             | mushroom called "the sickener," which is apparently edible
             | with an appropriate combination of brining, fermentation,
             | soaking, rinsing, and boiling, it's a little hard to resist
             | the temptation to prove everyone else wrong and turn it
             | into a tasty treat.
        
               | msrenee wrote:
               | Brings fugu to mind. I wish I could get a scientific
               | answer to whether there's actually a high associated with
               | it or if that's just in people's heads.
        
             | Alex3917 wrote:
             | > Why would anyone eat fugu or collect wild mushrooms?
             | 
             | I can't speak to fugu, but collecting wild mushrooms is
             | statistically one of the safest hobbies in existence.
        
       | AStonesThrow wrote:
       | A truly exhaustive history lesson:
       | https://bittersoutherner.com/feature/2022/the-elusive-roots-...
       | 
       | This was linked by Gemini, which happily chirped that rosin
       | potatoes can be great!
        
         | pazimzadeh wrote:
         | TLDR: it seems to be a way to preserve the potatoes by sealing
         | them
        
           | alwa wrote:
           | Where did you get that in the (excellent) article linked? I
           | noticed that they mention sealing in the context of pitch and
           | resin's industrial applications, but I understood the article
           | more to trace the rosin potato thing back to a trendy mid-
           | century extrapolation from potatoes cooked in brewers' pitch
           | in German-influence regions of Ohio and the northeast...
           | cook-and-eat-right-away throughout.
           | 
           | And I was surprised they served them at Cracker Barrel.
        
             | pazimzadeh wrote:
             | my bad, I actually got it from this youtube video
             | (https://www.youtube.com/watch?v=3KFoB5OEtRA), was trying
             | to the find the source for it, and that same article came
             | up when I searched google for "rosin preserves potatoes"
        
       | MostlyStable wrote:
       | I'm someone who loves doing weird culinary things, and has, in
       | the past, gone to relatively extreme amounts of effort to make
       | something at home rather than buying it (or at least...to try
       | making it at home). I am probably in the top 1% or more of people
       | willing to expend time and effort on weird food things.
       | 
       | And yet even for me, spending 1.5-2 hours to get 3 baked
       | potatoes, which are supposedly just....really nicely baked
       | potatoes?...seems like a lot.
       | 
       | I'm glad that there are people out there preserving weird old
       | historical cooking methods, but I feel no compulsion at all to
       | actually try this myself.
        
         | ajkjk wrote:
         | The article linked in another comment offers this by way of
         | justification:
         | 
         | > "Because none of the potato's flavor or aroma compounds can
         | escape, you get the most intense potato flavor you've ever
         | experienced," Brock says. "And they're steaming in their own
         | water, which is why you get a totally unique texture."
        
           | morkalork wrote:
           | Could you shrinkwrap and sous-vide a potatoe for the same
           | effect?
        
             | jszymborski wrote:
             | Strikes me to be the case.
        
             | anon84873628 wrote:
             | The article says the potatoes bubble and eventually float
             | to the top as water is released. So surely some other
             | volatile compounds could be released too? Perhaps compounds
             | cannot be dissolved in the rosin as they are in a pot
             | water? But then why is it better than regular baking?
             | 
             | Sous vide would certainly trap _everything_ , but then
             | again, we want a potato that is ultimately dry on the
             | outside.
             | 
             | What if instead of rosin we used something safer and more
             | available, like a cooking oil? I bet deep fried potatoes
             | would taste quite good! :-P
        
           | anon84873628 wrote:
           | Thank you. TFA does not seem to say _why_ they are so good...
        
           | saaaaaam wrote:
           | And yet the article clearly says that the rosin will bubble
           | because odd water escaping. If water can escape why can't the
           | aroma compounds?
        
             | jfengel wrote:
             | If it's only a slight bubble, then it's much less water
             | escaping than in conventional cooking techniques. Frying
             | potatoes give off so much water it gives the impression of
             | a rolling boil.
        
           | Moru wrote:
           | Any article that says "potato flavours" without specifying
           | what kind of potatoes should be taken witha large grain of
           | salt.
           | 
           | Try almond potatoes and you will eat nothing else.
        
             | jfengel wrote:
             | In the US, the default potato is the Russet. It has a good
             | flavor and is well suited to high temperature cooking.
             | 
             | I'd be practically certain that is what is intended. It's
             | possible it means a semi waxy white potato, which would be
             | contemporaneous with the historical setting.
             | 
             | It is very unlikely to mean any of the thousands of more
             | exotic varieties.
        
         | CoastalCoder wrote:
         | Same for me, although I'm probably in the top 20%, not top 1%.
         | 
         | For us in New England, I wish there were an easy way to see if
         | the difference is worth the effort.
        
         | ryoshu wrote:
         | Been a long time since I've had one, but I still remember that
         | it was the best potato I've ever had. Not sure why. Just really
         | good. And you can't eat the skin.
         | 
         | It was a deep south thing in the US, but even within living
         | memory not very common.
        
           | giraffe_lady wrote:
           | The article mentions pine forests of georgia and north
           | carolina so it seems to be a SE coastal plains thing. Quite
           | different history and culture from what people usually mean
           | by deep south.
        
             | ryoshu wrote:
             | Family from southern Alabama. Again, not common, but it
             | existed outside of Georgia and NC. People always looked at
             | me weird when I would talk about it, but certainly a
             | memorable experience.
        
       | opwieurposiu wrote:
       | Note that rosin is very flammable, but I guess so is cooking oil.
        
       | UniverseHacker wrote:
       | This is interesting history, but I am skeptical that this is safe
       | to eat, or better than a regular potato. If people are interested
       | in trying unusual potato cooking methods, I'd recommend making
       | Syracuse Salt Potatoes instead- they are excellent and easy.
        
         | anon84873628 wrote:
         | Well I agree that there are better alternatives. But is rosin
         | really that toxic? It seems to cause problems if the fumes are
         | inhaled, but I can't find evidence it is particularly dangerous
         | to consume. Similar to lots of other tree resins, which are
         | even used in traditional chewing gum.
        
           | teruakohatu wrote:
           | Turps is toxic if ingested, and it's not clear if the rosin
           | byproduct of turps production still contains some amount of
           | turps.
           | 
           | I loathe the smell of turps, I wouldn't eat anything that had
           | any chance of coming into contact with it.
        
           | UniverseHacker wrote:
           | I'm not sure about you, but "can't find evidence it is
           | particularly dangerous" is not exactly the standard of
           | evidence I want when deciding to consume something that isn't
           | normally a food item.
           | 
           | I have a tub of oar lubricant, for rowing. I also cannot find
           | any evidence that it would be dangerous to eat, but I'm not
           | going to fry up my dinner in it. Oar lubricant is
           | traditionally just tallow so maybe that's what this is- but
           | since it wasn't ever intended as food, do they, e.g. make
           | sure it isn't stored and processed with equipment containing
           | high lead concentrations, etc.? Maybe this one company adds
           | something special and toxic that makes it work better that
           | they don't have to disclose because it's not for human
           | consumption?
        
             | anon84873628 wrote:
             | Yes, but is there already some niche folk history of
             | cooking food in oar lubricant? My response was to you
             | saying "I am skeptical that this is safe to eat" when
             | people have been, apparently, safely eating it.
        
               | UniverseHacker wrote:
               | Indeed there is- beef tallow is a common cooking oil and
               | oar lubricant, and the supplier I buy my oar lubricant
               | from does also sell food grade tallow, but it is unclear
               | how or if it differs from the marine grade one
               | 
               | "apparently, safely eating it" is also still not the
               | standard I want to use for food. The guys down at the
               | fishing docks in SF Bay are "apparently safely eating"
               | all kinds of fish and sharks that there are big warning
               | signs posted all over not to eat.
        
           | variaga wrote:
           | Here's a link to the MSDS
           | 
           | https://www.fishersci.com/store/msds?partNumber=AC419175000&.
           | ..
           | 
           | > But is rosin really that toxic?
           | 
           | The LD50 is pretty high, so it's not likely to kill you, but
           | I don't think you'd want to eat it. "May cause skin, eye, and
           | respiratory tract irritation"
        
             | pama wrote:
             | I guess that with a steaming hot potato the higher risk is
             | to inhale rosin in the steam rather than to eat it. I would
             | much rather use duck fat to roast potatoes.
        
             | haccount wrote:
             | No mention of alimentary tract irritation ;)
        
             | kragen wrote:
             | Their MSDS for sodium chloride says, "Wear personal
             | protective equipment/face protection. Ensure adequate
             | ventilation. Avoid contact with skin, eyes or clothing.
             | Avoid ingestion and inhalation. Avoid dust." and that, in
             | case of skin contact, you should "Wash off immediately with
             | plenty of water for at least 15 minutes. Get medical
             | attention immediately if symptoms occur," to avoid which
             | you should "Wear appropriate protective eyeglasses or
             | chemical safety goggles as described by OSHA's eye and face
             | protection regulations in 29 CFR 1910.133 or European
             | Standard EN166. Wear appropriate protective gloves and
             | clothing to prevent skin exposure." https://www.fishersci.c
             | om/store/msds?partNumber=S64010&produ...
             | 
             | Just to clarify, this is not some potentially contaminated
             | crude rock salt product. It's the USP grade of table salt
             | for incorporation into pharmaceutical products, which the
             | MSDS also recommends against.
             | 
             | Like salt, rosin is an approved food additive in the US: ht
             | tps://www.hfpappexternal.fda.gov/scripts/fdcc/index.cfm?se.
             | ..
             | 
             | There are toxic plants out there, but pine trees are pretty
             | safe. You can safely chew even raw pine resin, even without
             | boiling out the turpentine. You can make tea from pine
             | needles. Try it, it's good.
             | 
             | Frying in rosin is a somewhat risky, even potentially
             | fatal, form of food preparation, but the risk isn't that
             | the rosin is going to poison you. It's that you'll spill
             | hot rosin on yourself and get badly burned.
        
         | akira2501 wrote:
         | Fondant potatoes are my new jam.
        
         | omega3 wrote:
         | Is the crust edible on these, looking at the photos online that
         | seems a lot of salt if it is?
        
       | Jedd wrote:
       | Absolute best baked (what some people mistakenly call roast)
       | potatoes I've ever had were in a small restaurant in Cornwall,
       | England.
       | 
       | They were almost definitely locally grown, doubtless extremely
       | fresh, and almost definitely an heirloom variety. (And I
       | acknowledge that food always tastes better when you're on
       | holiday.)
       | 
       | We were told the preparation was pretty simple: 'boil in a strong
       | stock until almost fully cooked, then dry and coat in goose fat,
       | and then bake until they look good'.
       | 
       | (Apart from being much faster than conventional baked potatoes,
       | and much much faster & safer than this rosin preparation, there's
       | little risk of getting sick from this method.)
        
         | fanf2 wrote:
         | In Britain, baked potatoes are oven-cooked whole, skin on,
         | usually without fat; roast potatoes are peeled, cut into large
         | uniform chunks (halved or quartered depending on the size),
         | parboiled, then oven-cooked in lots of fat.
        
           | lbotos wrote:
           | If you are American and have never had british style roasted
           | Potatoes... oh boy are you in for a treat.
        
           | jfk13 wrote:
           | That's how my mother used to do it, but I've found that you
           | don't actually need to use "lots of fat" -- you can get good
           | results with much less (just enough oil or goose fat to cover
           | the bottom of the roasting tray), provided you toss the
           | potatoes in it (pre-heated) when putting them in, and turn
           | them a few times during cooking.
           | 
           | The variety of potatoes used is also a critical factor.
        
             | magicalhippo wrote:
             | We toss the potatoes on the tray in just enough oil to
             | lightly coat them. Don't boil them, just have them in the
             | pre-heated oven for 30ish minutes.
             | 
             | I prefer mealy potatoes, typically almond potatoes[1], but
             | others work fine too.
             | 
             | Add some herbs, salt and pepper while tossing. Super easy,
             | hard to mess up and yum yum.
             | 
             | [1]: https://en.wikipedia.org/wiki/Almond_potato
        
               | Moru wrote:
               | We eat almost only almond potatoes. After eating those,
               | there is nothing else that really cuts it any more. Every
               | time we get back to Sweden and finaly can eat almond
               | potatoes again, it's like "Oh, THIS is how it's supposed
               | to taste". If you don't like potatoes, it's because you
               | haven't had these. Just cook them carefully, they become
               | mashed potatoes _very_ easily. Serve as they are, with a
               | piece of butter. I can eat only potatoes the whole week.
               | 
               | Yes, they can be hard to find in southern parts because
               | they are harder to grow in warm climate.
        
               | ObscureScience wrote:
               | Yeah almond potatoes should not be parboiled in my
               | opinion. I prefer to halve them (not smaller/slimmer
               | pieces).
        
             | datavirtue wrote:
             | But I don't have any geese.
        
               | Jedd wrote:
               | Having geese doesn't imply ownership of geese fat --
               | having recently _had_ geese _might_.
        
               | fecal_henge wrote:
               | You do own the goose fat, you just havent taken it out of
               | the box yet.
        
             | bostik wrote:
             | I tend to cheat a little. Parboil until the surface layer
             | is soft, pour into a large colander. Allow to steam off for
             | a while. Toss and turn to get all surfaces properly roughed
             | up, move into a large (steel) bowl. Add 3-4 tablespoons of
             | goose fat, toss and turn again to coat all surfaces.
             | 
             | Move to a sufficiently deep (steel) baking tray, sprinkle
             | with salt, add a couple of sprigs of fresh rosemary on top,
             | and cook until properly roasted. No need to even turn them
             | around.
             | 
             | > _The variety of potatoes used is also a critical factor._
             | 
             | Bingo. The more "floury", the better.
        
               | d1sxeyes wrote:
               | Add a sprinkle of semolina next time
        
           | NikkiA wrote:
           | You missed the important step after parboiling - you toss the
           | potatoes in the pan used for parboiling, so that the outside
           | gets slightly mashed around the edges; basically just give
           | them all a single smack against the inside of the drained
           | pan.
        
             | MattPalmer1086 wrote:
             | Yep, that helps to get them golden and crispy while
             | roasting.
        
           | margalabargala wrote:
           | As an American, we have the same names for the same types of
           | potatoes and cooking methods. I have no idea what OP is on
           | about.
           | 
           | If I ordered a baked potato in a restaurant and did not
           | receive an entire, whole, skin-on potato, optionally sliced
           | open across the top, I would be shocked and would have a
           | negative opinion of the restaurant.
           | 
           | We make roasted potatoes all the time, much like you
           | describe. When we do it at home, we'll frequently use Idaho
           | Gold potatoes that do not need to be peeled, and we'll skip
           | the parboiling step. Plenty of places make this without
           | skipping those steps, and they're delicious, just more labor
           | intensive.
        
         | anon84873628 wrote:
         | That's similar to Jamie Oliver's "famous" recipe. He also
         | suggests chuffing up the outsides a bit before baking, to
         | create a crispy outer layer.
        
           | germinalphrase wrote:
           | J. Kenji Lopez-Alt does it similarly. Alkaline water and a
           | roughing up before roasting.
        
         | riiii wrote:
         | That wasn't at The Rising Sun by any chance?
        
           | OJFord wrote:
           | The small restaurant in Cornwall, must be yeah.
        
             | thom wrote:
             | On the off chance that somebody reading this is planning a
             | culinary tour of Cornwall, Salamander in Mevagissey is also
             | a great spot.
        
         | OJFord wrote:
         | > Absolute best baked (what some people mistakenly call roast)
         | potatoes I've ever had were in a small restaurant in Cornwall,
         | England.
         | 
         | > [...]
         | 
         | > We were told the preparation was pretty simple: 'boil in a
         | strong stock until almost fully cooked, then dry and coat in
         | goose fat, and then bake until they look good'.
         | 
         | You had roast potatoes.
         | 
         | I won't tell you how to make Buffalo wings or Chicago pizza.
        
         | jimnotgym wrote:
         | I don't think we are mistaken to call the potatoes we put in
         | the roasting tin with our roasting meat for a classic Sunday
         | roast....roast potatoes.
         | 
         | Baked potatoes are baked skin-on whole in the oven.
         | 
         | I don't think 'mistakenly' is the word you were looking for.
         | Otherwise we can start on a 'who invented English anyway'
         | thread of food naming.
         | 
         | + crisps that some people mistakenly call chips
         | 
         | + chips that some people mistakenly call fries
         | 
         | + biscuits that some people mistakenly call cookies
         | 
         | Etc
        
           | fakedang wrote:
           | "some people"
        
             | portaouflop wrote:
             | Mostly people living in a troubled, oil-rich former British
             | colony with a history of political violence.
        
               | fecal_henge wrote:
               | Nigeria?
        
               | PittleyDunkin wrote:
               | I thought the above was a joke but literally what else
               | fits? The british empire never held most of what we know
               | to be oil-rich now.
        
               | portaouflop wrote:
               | It's the United States dummy
        
               | PittleyDunkin wrote:
               | The oil-rich parts were never a british colony.
        
               | profquail wrote:
               | Pennsylvania has oil and was formerly a British colony:
               | https://en.wikipedia.org/wiki/Pennsylvania_oil_rush
        
               | sandworm101 wrote:
               | Canada was. Lots of oil in canada.
        
               | fecal_henge wrote:
               | Lots of rosin also.
        
               | PittleyDunkin wrote:
               | Canada is not a part of the United States, though.
               | Neither is Nigeria. Surprising this needs to be stated.
        
           | margalabargala wrote:
           | You're making this out to be some British/American difference
           | but it isn't. OP is just wrong about potatoes.
           | 
           | In America also, baked potatoes are baked skin-on whole in
           | the oven. Often wrapped in aluminum foil.
           | 
           | Roasted potatoes are cut up, tossed in oil, salt, and
           | sometimes other herbs, and baked that way.
        
             | derefr wrote:
             | It's not even specific to potatoes. "Bake" and "roast" are
             | distinct culinary jargon terms. Quoth ChatGPT:
             | 
             | > Baking occurs at a moderate temperature, and is generally
             | used to cook and solidify foods without browning them
             | excessively. This technique creates a consistent, even
             | texture throughout the food.
             | 
             | > Roasting, meanwhile, uses a higher temperature, and
             | focuses on achieving a crispy, browned exterior with a
             | tender interior, enhancing flavors through caramelization
             | and the Maillard reaction.
             | 
             | Anything you put in an oven covered completely in aluminum
             | foil --like a baked potato -- is only going to end up
             | baked, not roasted.
        
               | adriand wrote:
               | > Anything you put in an oven covered completely in
               | aluminum foil --like a baked potato -- is only going to
               | end up baked, not roasted.
               | 
               | Actually, this produces a steamed potato. Covering it in
               | foil is a poor technique for this reason. To properly do
               | this: wash the potato, stab the skin a few times with a
               | fork (failure to do this may produce an exploded potato),
               | sprinkle with salt while still damp so the salt adheres,
               | then roast directly on the oven rack (or in a barbecue)
               | until squeezing it gives a fair bit of give.
        
           | jspash wrote:
           | Explain how you cook jacket potatoes then. Keep em in the
           | side pocket of your jacket for a week or so until it's ready
           | to eat?
        
         | jimnotgym wrote:
         | Btw I never knew a restaurant in Britain use locally grown
         | heirloom varieties of anything without making a big deal about
         | it. Although I suppose in American terms all produce grown in
         | Britain is fairly local. Potato growing tends to be quite
         | regional.
         | 
         | 'New potatoes', the thin skinned spring type, usually eaten
         | boiled with the skin on, come first from Jersey (Jersey
         | Royals). Then Cornwall, but more commonly Pembrokeshire (just
         | over the Bristol Channel from Cornwall). The thick skinned
         | general purpose types come later from places with deep stone
         | free soils. I think more of Lincolnshire, although they are
         | grown in pockets all over. I like the ones from the localised
         | sandy soils in mid Shropshire, but I grew up on them so I'm
         | probably biased. Those are the ones I would roast.
        
         | ifwinterco wrote:
         | You are definitely describing roast potatoes
         | 
         | Most likely they were maris pipers (actually a post war
         | invention), maybe king edwards
        
         | sourcepluck wrote:
         | I think other responders have suitably highlighted how you did
         | in fact have roast potatoes, but what I'd like to know is how
         | you became so convinced you had baked potatoes in the first
         | place? Could you describe for us what you think roast potatoes
         | and baked potatoes are?
        
         | switch007 wrote:
         | Boil in stock? That's genius. Not sure why I haven't thought of
         | that.
        
         | AndrewVos wrote:
         | Which restaurant was this? I live in Cornwall so want to check
         | it out!
        
       | acyou wrote:
       | This is so dumb, I can hardly believe that it is real. I would
       | need to talk to someone who had experienced it firsthand to fully
       | believe.
       | 
       | Water (stew) is... in every aspect possible a superior cooking
       | medium.
       | 
       | How could this ever have been economical? How hard is it to make
       | a cooking fire, or share a rosin melting fire with a cook pot?
       | 
       | I think it's essentially an old sarcastic joke, that people took
       | too literally?
        
         | oh_my_goodness wrote:
         | No, it's real, it's just three or four generations back in
         | time. Fire was essential. Without fire the potatoes wouldn't
         | cook.
        
         | z2 wrote:
         | Water is a solvent, and unless pressurized, liquid water is
         | limited to a maximum temperature of 100C. Many foods cook
         | differently (one may even say better) at higher temperatures,
         | or if parts don't get dissolved into the water. Not defending
         | using a poisonous rosin instead, but just pointing out why we
         | don't all just stew potatoes.
        
       | throwup238 wrote:
       | Well, now I'm curious if other things often called rosins can be
       | used the same way. Would cannabis rosin extracted by the
       | solventless method work? It's edible so probably not dangerous to
       | eat like turpentine rosin.
       | 
       | Can I make cannabis rosin potatoes for danksgiving?
        
         | dmurray wrote:
         | I think you'd need industrial quantities for a recipe like
         | this. Maybe you can infuse some animal fat (or vegetable oil)
         | with the cannabis rosin, though, and roast the potatoes in it.
        
           | dole wrote:
           | It mentions requiring 2 1-gallon "paint cans" of rosin to
           | start cooking 3 potatoes. While possible, that sounds like a
           | LOT of cannabis rosin to attempt to make or collect, but I'd
           | be happy to help.
        
             | SoftTalker wrote:
             | The paint can reference was weird to me. A gallon is a
             | gallon. Is rosin sold in gallon cans?
        
       | ChumpGPT wrote:
       | I've spent time reading some old baking books and looking at
       | recipes, thinking I would discover some amazing technique,
       | ingredient, or recipe that would be a game changer. What I
       | discovered was that baking 50 to 200 years ago was primitive and
       | offers very little other than some interesting history. Modern
       | baking ingredients, techniques, and equipment are at such a
       | higher level that there is little usefulness found in these old
       | publications.
       | 
       | I would imagine the same is true for cooking. Our ingredients,
       | equipment (such as temperature control), and techniques are so
       | much better than these old ways of doing things, they just can't
       | compare when it comes to taste and quality. Cooking and baking
       | are sciences that have come a long way and are remarkably better
       | than they have ever been. There is no reason to cook with poisons
       | or questionable practices just for nostalgia's sake.
        
         | LarsAlereon wrote:
         | I came to this same conclusion after reading Harold McGee's "On
         | Food and Cooking: The Science and Lore of the Kitchen" as well.
         | Prior to modern cooking science, it seems like a lot of recipes
         | involved something akin to a religious ritual that accidentally
         | did something beneficial to your food. Now that we understand
         | what is happening, we can use modern techniques to get much
         | better results.
         | 
         | It might have been that book that talked about untapped
         | potential for better flavors by making certain sauces in a
         | microwave oven. The basic theory (as I recall) was that the
         | microwaves would selectively heat oil droplets suspended in a
         | watery sauce, and this would better extract flavor compounds
         | into the oil while not heating the overall sauce enough to
         | damage flavors.
        
           | senkora wrote:
           | > the microwaves would selectively heat oil droplets
           | 
           | I think it would be the opposite. It would selectively heat
           | the water, because water is polar. That would still be
           | consistent with the effect.
        
             | webmaven wrote:
             | IIUC, while the water heats faster, it has a lower upper
             | limit (the boiling point), while oil and fat keep getting
             | hotter.
             | 
             | Source: I have ruined a few plastic containers by heating
             | greasy food in the microwave, because the fat easily gets
             | hot enough to melt the plastic. Homemade Bolognese sauce
             | seems particularly dangerous in this regard, because it is
             | both acidic and greasy, and that will absolutely EAT
             | plastic.
             | 
             | P. S. Even if you don't damage the plastic per-se, heating
             | oily food in the microwave in a plastic container isn't a
             | good idea, quite a few nasty compounds will leach into the
             | oil more readily than into water.
        
         | leni536 wrote:
         | I recommend Max Miller's Tasting History series on youtube. He
         | certainly covers some unusual recipes and ingredients that
         | still look interesting. Admittedly, I didn't try much of his
         | recipes.
        
       | tcbawo wrote:
       | It seems that the boiling point and flash point of rosin is quite
       | high, somewhere close to 390 degrees Fahrenheit. So, transferring
       | the heat directly into potato probably has some positive effect
       | on cooking, but I would think cooking potatoes at that
       | temperature in high temp cooking oil would produce a similar
       | effect without toxicity. Giving up reusability seems like a good
       | tradeoff.
        
         | UniverseHacker wrote:
         | I doubt the rosin is more reusable than cooking oil.
         | Restaurants often reuse the same fry oil for very long periods
         | of time.
        
           | giraffe_lady wrote:
           | Not "very long" no. The oil can be cleaned and reused a few
           | times but even with light use a week is pushing it. Places
           | that do a lot of frying are changing oil every other day,
           | possibly even daily at like a fried chicken place.
        
             | UniverseHacker wrote:
             | I think this is going to depend on the quality of the
             | restaurant and any regulations they're subject to... in any
             | case a week of restaurant use is probably equivalent to a
             | person at home reusing the same oil for years
        
               | giraffe_lady wrote:
               | I've never worked in a jurisdiction where the health code
               | covered this. The oil starts smoking at cooking
               | temperatures and foams and doesn't cook right. The food
               | coming out of it looks and tastes and smells bad.
               | 
               | You also can't go years with it at home even with few
               | uses. After you've fried in it once the oxidation goes
               | much faster even if you don't use it again. Maybe if you
               | freeze it between uses but I've never heard of that.
        
               | UniverseHacker wrote:
               | I intentionally used the words "very long" instead of an
               | exact time specifically to avoid pedantic replies along
               | the lines of "no not actually that long but slightly
               | shorter" because my point was that cooking oil, like
               | rosin, is sometimes reused in some contexts and by some
               | people. Please replace "very long" with whatever exact
               | period of time you think is the longest time the shadiest
               | possible restaurant with awful food might let their
               | cooking oil go for.
               | 
               | I'll admit that I pretty much deserve this, because
               | pointing out that cooking oil can also be reused, was
               | itself a pretty pedantic and pointless thing to mention.
        
               | giraffe_lady wrote:
               | idk why don't you instead just admit you were confidently
               | spouting off about something you know nothing about
        
             | SoftTalker wrote:
             | I used to work at McDonald's. The deep fryer oil was
             | filtered and the fryers cleaned every night. You could tell
             | when the oil needed to be changed, it was dark and smokey.
             | 5-7 days was about the limit, we always discarded the oil
             | from at least one fryer every night, and we had 6.
             | 
             | When they switched from beef tallow to vegetable oil, it
             | seemed like they needed to be changed a little more often.
        
       | turtlebits wrote:
       | Shouldn't these be boiled potatoes and not baked? Would this
       | taste much different from a potato cooked in oil but not deep
       | fried (confit)?
        
       | bjackman wrote:
       | Hmm nothing in this article explains the effect the rosin is
       | supposed to have?
       | 
       | "This is the best way to cook potatoes. Everything about it is
       | difficult and dangerous. You have to try it!"
        
         | FounderBurr wrote:
         | It probably has to do with the boiling point of pine resin.
         | There are probably other less noxious substances that boil in
         | the 300c range that would produce similar results without the
         | risk of fire or poisoning.
        
           | Giorgi wrote:
           | hence the "lost art"
        
           | cogman10 wrote:
           | I mean, frying oil. You could almost certainly achieve the
           | same effect frying a whole potato in sunflower/peanut oil at
           | 230C
        
         | pinkmuffinere wrote:
         | +1, I desperately want to know why I should try this.
        
           | LarsAlereon wrote:
           | It's basically just deep frying in an uncommon (and possibly
           | not food-safe?) oil.
        
         | NelsonMinar wrote:
         | I can't find the reference but another article I read asserted
         | the higher cooking temperature made a better texture of potato.
        
         | OJFord wrote:
         | That frustrated me too.
         | 
         | I suspect it's hardening around the skin of the potato (hence
         | can't eat the skin) and essentially letting the potato steam
         | itself?
         | 
         | Kind of like if you deep-fried it submerged in oil, but with
         | even less ingress, and much less than boiling.
         | 
         | I commented this elsewhere and someone suggested sous vide
         | ought to be very similar then, of course. (Added benefit
         | perhaps: you can eat the skin!) Only difference might be that
         | the rosin can get hotter, more like oil, than boiling water
         | circa 100C.
        
           | croisillon wrote:
           | I guess a similar effect of "steaming potato within its
           | hardened skin" can be reached wrapping potatoes in aluminum
           | and then putting them in a fireplace
        
           | msrenee wrote:
           | If you've never done it, deep fried whole potatoes are
           | amazing. It gets creamy in a way that good mashed potatoes
           | do. Just be careful as they can explode like anything else
           | with a lot of water. You want to poke holes in it so the
           | steam can escape.
           | 
           | I will not allow myself to purchase a deep fat fryer because
           | it's not healthy to live exclusively off of fried potatoes
           | and associated toppings.
        
           | ricardobeat wrote:
           | The potato itself will not go above 100C until the entirety
           | of its water has boiled off, so that's unlikely to have a
           | meaningful effect. I imagine deep-frying, or a slow confit
           | will have the exact same effect with a lot less danger.
        
         | fakedang wrote:
         | Yeah, got the same vibe from the article. Try cooking in this
         | possibly noxious stuff, it's the best!
         | 
         | You need a dedicated setup to cook your potatoes and you can't
         | even eat the skin. That for me is an instant disqualifier.
        
           | cogman10 wrote:
           | Don't worry, if you accidentally pierce the skin you'll
           | simply poison yourself.
        
         | whywhywhywhy wrote:
         | The skins the best bit of a baked potato anyway, if you're just
         | gonna eat the inside then mash or roast would be better anyway.
        
       | userbinator wrote:
       | I use rosin regularly as flux for soldering. Cooking a potato in
       | it doesn't sound appetising, especially after the warning to not
       | eat the skin, as the skin is not impermeable either.
       | 
       | That said, the Wikipedia page for rosin says it is "an FDA
       | approved food additive".
        
         | tommiegannert wrote:
         | Hmm. The state of California would probably argue that both the
         | potatoes and the rosin has turned into cancer-generating zombie
         | paste, at temperatures where using rosin for cooking makes
         | sense.
        
         | amelius wrote:
         | Actually, I love the smell of my rosin-based flux.
         | 
         | (But I know it is not healthy to inhale it)
        
       | tdeck wrote:
       | I wonder if baking in fine sand or salt would have a similar
       | effect with less risk. Or perhaps wrapping in aluminum foil
       | before putting the potato in the rosin pot.
        
         | sitharus wrote:
         | Well Hangi potatoes are delicious and those are slow-roasted in
         | a stone heated earth oven, so I expect sand or salt cooked
         | would be really good.
        
       | InMice wrote:
       | Personally this cooking method in the link to me is disgusting.
       | Ive settled on my favorite way to cook potatoes - microwave. They
       | get the gentle cook of a boil without the water soluble nutrient
       | loss. Sometimes I let them chill overnight in the fridge then
       | give them a gentle reheat before eating to decrease glycemic load
       | and increase resistant starch. This makes them a lot more filling
       | to me. I eat the skin always.
        
         | phito wrote:
         | I love throwing sweet potatoes in the microwave. Ready in 7
         | minutes and delicious.
        
       | wslh wrote:
       | I wonder how that tastes. In Argentina, it's common to put
       | potatoes directly inside and on top of the charcoal on a
       | parrilla. Jump to 5:30 here:
       | https://youtu.be/kpp_AzckMiA?si=6tlhwi7V6v6-T0W7.
        
       | mojosam wrote:
       | It sounds like most commenters here have never had a rosin tater.
       | When I was kid, a very popular, upscale restaurant called
       | Planters Back Porch in seafood mecca Murrells Inlet, SC
       | specialized in rosin taters. They were very good, enough for
       | there to always be long lines to get in.
       | 
       | In case it's not clear from the description, after removing the
       | potato from the rosin, and wrapping in paper, the thin layer of
       | remaining rosin quickly solidifies into a hard shell, so you can
       | then cut through it to get access to the flesh of the potato
       | without accidentally eating rosin.
        
       | Giorgi wrote:
       | they pushed amazon affiliate link, but it is not formed well.
        
       | crazygringo wrote:
       | None of this makes any sense at all. This sounds like it belongs
       | in the same category as gold-plated HDMI connectors improving
       | your TV's image quality.
       | 
       | Some comments suggest it's because it's cooked at a higher
       | temperature than boiling. That doesn't matter because the inside
       | of the potato obviously never goes above boiling, since it
       | continues to have lots of water inside after being cooked. The
       | same exact effect should be achievable simply with deep-frying
       | the potato at the same temperature.
       | 
       | Other comments suggest something somehow preserves the potato's
       | flavor more than other methods. But that's not how cooking/flavor
       | works. If the rosin (or boiling water or frying oil) were seeping
       | into the inside of a potato then sure any or all of them could be
       | leaching out flavor compounds, or reacting with existing
       | compounds... but they're not.
       | 
       | All this is doing is heating the inside of the potato, where
       | literally the only variables are the amount of heat being applied
       | and the moisture escaping at the surface. If you were eating the
       | _skin_ then yes there 's a massive difference between boiling vs.
       | frying vs. roasting. But not on the _inside_ (except for how much
       | water vapor escapes which is a question of temperature and
       | wrapping). And this article is literally about eating only the
       | inside of the potato, since the rosin itself is apparently not
       | fit for consumption.
       | 
       | Best I can guess, this is just a novelty thing about eating
       | potatoes encased in newspaper that has wound up essentially glued
       | to a hard potato shell? Seems like it's more about the
       | experience, and nothing whatsoever to do with flavor or taste.
        
         | margalabargala wrote:
         | I'm not sure this is true.
         | 
         | Like you said, the cooking of the inside is a function of the
         | water vapor escape, which is a function of temperature and
         | wrapping.
         | 
         | People elsewhere in this thread have said they have tried both
         | methods, and commented on how when deep frying a whole baked
         | potato, the escaping water vapor causes the oil to visibly,
         | vigorously boil, but this doesn't happen with rosin, suggesting
         | the vapor remains trapped inside.
         | 
         | While liquid water cannot go above 100C, water vapor certainly
         | can. That water remains in the potato after cooking can just be
         | re-condensed vapor. How the expanded gas would remain in the
         | potato I have no idea.
         | 
         | My interpretation is that the difference from deep-frying is
         | that something about the rosin method prevents as much water
         | vapor from escaping. Maybe it's just typical cooking
         | temperatures, and a deep fryer set to the same temperature as
         | the rosin pot would yield a similar result, they just usually
         | aren't set to that temperature.
        
           | jpalomaki wrote:
           | How about wrapping the potato on something that seals it
           | before heating it up?
           | 
           | Some recipies instruct you to wrap the potatoes with
           | aluminium foil. I've always thought this is useless, but
           | maybe should give it a try.
        
           | crazygringo wrote:
           | Probably the rosin is just at a lower temperature. Set oil to
           | 275degF instead of 350degF and you'd achieve the same effect,
           | if that's the case. (As you suggest.)
           | 
           | Or if the rosin is creating some kind of impermeable seal
           | (unlikely since it's liquid at this temperature, but let's
           | suppose it chemically reacts with the skin somehow) then you
           | achieve the same thing by wrapping the potato in aluminum
           | foil. That's the whole reason for foil around baked potatoes
           | at steakhouses.
           | 
           | The point is, the rosin isn't doing anything special you
           | can't already easily do. There's no special flavor here.
        
       | anvil-on-my-toe wrote:
       | If you're a slave in antebellum North Carolina, you have rosin
       | on-hand and an open fire, no oven. You can cook your potatoes on
       | the hot coals and ash or boil them in water in a pot. This method
       | might have been more thermally efficient than either of those
       | options and resulted in a nicer inner texture, while also
       | conveniently sealing the cooked potato in a waxy later so it
       | could be consumed later.
        
       | omnibrain wrote:
       | My wife and I like to microwave potatoes. We call them "sexy
       | microwave potatoes" after the Reddit story that brought us this
       | idea:
       | https://www.reddit.com/r/AmItheAsshole/comments/jdnt43/aita_...
        
       | SoftTalker wrote:
       | "Hey Jim, try this potato, it's cooked in the waste products of
       | distilled turpentine. Don't eat the skin."
       | 
       | Jim: "No thanks."
        
         | cogman10 wrote:
         | "But it's an ancient lost art like decorating Christmas trees
         | with asbestos!"
        
       | bargle0 wrote:
       | I wonder if similar results could be had by cooking the potato in
       | clay or a salt crust.
        
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