[HN Gopher] Reusing Yesterday's Coffee Grounds for Another Cup o...
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Reusing Yesterday's Coffee Grounds for Another Cup of Coffee
Author : jorgesborges
Score : 45 points
Date : 2022-11-27 17:27 UTC (5 hours ago)
(HTM) web link (wokelark.com)
(TXT) w3m dump (wokelark.com)
| ruined wrote:
| this reads like generated blogspam
| Our_Benefactors wrote:
| Especially with the scroll-hijacking-in-line-ads every
| paragraph.
| cauliflower2718 wrote:
| Which ads? The links I see are either to her other blog posts
| or to scientific studies. For example, the "cold brew
| method", "French press", "better water for coffee making",
| and "pressurized portafilter basket" links are all tutorial
| or explainer blog posts.
| jrmg wrote:
| Oh, man, I'm glad I'm not the only one to think this. It felt
| like a real article was in there, but the author had copied the
| stilted, overly verbose style of generated-for-SEO articles. I
| really hope we're not entering a world where quality content
| has to be written in this robotic, repetitive way to 'work'
| online.
| snoot wrote:
| It's not that it _has_ to be written that way. It's that
| people who have grown up with it have learned that this is
| the way.
| clarkdale wrote:
| I came to say the same thing. The 10th and 11th paragraphs
| (each one sentence) say the same thing. And they have the same
| effect as the title of the second section (immediately
| following those paragraphs). Each are the same idea of the
| article title.
| hardwaregeek wrote:
| Not coffee, but I've wondered this about stock. Recipe authors
| claim that the vegetables/meat have no more flavor to give, but I
| don't know if they've actually tested this.
| wirrbel wrote:
| Imho if they had more flavour to give my grandmother would have
| increased the water-to-bone ratio in her personal recipe book.
|
| That being said the veggies are often fairly tasty. The hat is
| they won't nurture a next gallon of broth but without further
| dilution they are great.
| PartiallyTyped wrote:
| Perhaps caramelising them before the second attempt could work.
| I very much doubt that they do not have more flavour to give.
| MrMan wrote:
| anything with "woke" in the url is socialist, and bad, so didn't
| click on this
| progman32 wrote:
| Then, perhaps you've missed the FAQ:
| https://wokelark.com/about-the-woke-lark-and-vessy/
|
| > I do not associate my blog with how the word "woke" is being
| used nowadays.
| b1ue64 wrote:
| It's a fucking coffee blog
| anigbrowl wrote:
| _And is all of this worth it? I personally don't think so._
|
| Betteridge's law of Headlines strikes again
| loloquwowndueo wrote:
| Haha at home we always make fun of cold brew as "monetizing cold
| coffee leftovers from yesterday" I guess this backs that up a bit
| :)
| kortilla wrote:
| ?
|
| Cold brew is not just refrigerated coffee. That would be "iced
| coffee".
|
| Cold brew is made in the fridge with new grounds (no hot water
| involved).
| [deleted]
| tdeck wrote:
| What happens if you use twice the amount of old coffee grounds to
| make cold brew? Would that approximate the original product?
| ryanwhitney wrote:
| Yeah, that's what's missing here: experimentation on how to
| make it work.
|
| I've tried this by re-using grounds, but also adding fresh
| grounds on top. (About half as much as i'd normally use.) It
| still comes out a bit watery, but much closer to normal.
| markiannucci wrote:
| In 2015, I had a similar curiosity. Coffee stack exchange was
| just getting started and the top answer is enlightening.
| https://coffee.stackexchange.com/questions/1749/brewing-with...
| baxtr wrote:
| What's definitely possible is reusing green tea for a second or
| even third infusion.
| netfortius wrote:
| This "research" reminded me of the nechezol [1] we enjoyed under
| the guidance of the renown coffee specialist Ceausescu
|
| [1] https://en.wikipedia.org/wiki/Nechezol
| gumby wrote:
| The TL;DR is:
|
| > And is all of this worth it? I personally don't think so.
|
| Author put some thought into it so it's an interesting read, but
| still, the lede should not have been buried.
| Scoundreller wrote:
| > When reusing coffee grounds to make another coffee the next day
| you risk ingesting unwanted fungi and bacteria.
|
| > These are attracted by the wet grounds and it's possible that
| the microorganisms start establishing their colonies in less than
| 24 hours.
|
| > Therefore drinking coffee that's made from yesterday's grounds
| could be potentially dangerous while also having an unpleasant
| taste.
|
| Storing the spent grounds in the fridge would be a good
| preservation method.
|
| Personally, I think putting boiling water in the grounds as an
| initial treatment should kill off any initial bacteria.
|
| Fungal spores aren't killed by boiling, but they might germinate
| after soaking and then get killed after the second hit. This was
| an early method of killing fungal spores before pressure vessels:
| tyndallisation.
|
| Coffee grounds (without any sugar, etc.) isn't a very nutritive
| media.
| antognini wrote:
| The second boil wouldn't really help much with the food safety.
| The bacteria or fungi aren't themselves toxic, it's the waste
| they produce that is. And unfortunately those toxins aren't
| destroyed by boiling water.
|
| But I agree that it should be fine if you put it in the fridge.
| dehrmann wrote:
| Might be interesting to regrind french press grounds finer and
| change extraction methods.
| ramesh31 wrote:
| I do it every day. First pot in the morning is fresh, and my
| "2:00 pot" uses the same grounds. It's weaker, but that's the
| point.
| pessimizer wrote:
| I love this, and even though it seems like the experiments were a
| failure, if one hadn't been it might have saved a lot of people a
| lot of money. As it is, it's saved at least a few people from
| trying the experiment themselves. Also there's a list of
| alternative uses for coffee grounds, and a link to another
| blogpost that expands on those in detail.
|
| This post took more effort than 99% of blogposts, calling it
| blogspam is pretty offensive.
|
| It reminds me of another favorite article online:
| https://www.instructables.com/The-Science-of-Biscuits/
|
| Sourced from:
| https://travisdanielbow.weebly.com/blog/category/cooking-exp...
| angry_moose wrote:
| I use a Chemex drip coffee maker and get pretty good results by
| halving the amount of grounds I use for subsequent cups. No idea
| about the caffeine content but the taste is not noticeably
| different.
|
| With my grinder, a 12 second grind gives a good first cup. For
| the second cup I keep the spent grounds in the filter and add
| another 6 second grind. If I go for 3, another 6 second grind.
|
| That works out to a 25% or 33% savings depending on number of
| cups (18/24 seconds vs 24/36). I've never tried carrying them
| over day to day.
| vanilla_nut wrote:
| FYI you can wash and reuse Chemex paper filters 2-5 times, in
| my experience, before they start to taste weird or fall apart.
|
| Considering how expensive and wasteful paper coffee filters can
| get, it's a nice optimization.
| feet wrote:
| Personally I have a metal filter for my pour over. Less waste
| crazygringo wrote:
| So the answers are about what you'd expect -- it's weak, cold
| brew is better but still weak, and who even knows if there's any
| caffeine in there.
|
| But I still can't help but wonder out of sheer curiosity, to take
| this to the limit -- what about making cold brew but with 3x or
| even 5x or 10x the ratio of grounds to water?
|
| Surely there's a way to get "reused" coffee to a comparable
| _concentration_ to "first use". And then... would it be even
| remotely drinkable, or too much bitterness-to-flavor?
| Sufficiently caffeinated, or would comparable caffeine make it
| unbearably bitter?
|
| I'm so curious now -- I feel like this blog post got 80% of the
| way, but is missing the final experiment!
| bee_rider wrote:
| This fits my priors at least -- reused beans generally aren't
| great, but cold brew is pretty resilient to less-than-stellar
| beans.
| cf100clunk wrote:
| If the coffee grounds were left at room temperature in the basket
| or device since the previous brew, wouldn't they be home to
| bacteria and maybe other unpleasantness? I'm guessing immediate
| cold storage of the used grounds would be necessary. I'll stick
| to fresh, on-demand grinding.
| yellow_lead wrote:
| This is addressed in the article. You are correct. She tries
| drying the spent grounds instead though.
| cf100clunk wrote:
| Point taken. I tried not to tl;dr it but that article isn't
| very direct and to-the-point.
| cardamomo wrote:
| I generally concur with sibling commenters' criticisms, but I
| still enjoyed reading this article. To me it's a light-hearted
| but nevertheless thorough exploration of coffee brewing. I love
| that the author attempts to answer a question that almost nobody
| was asking--simply out of sheer curiosity!
| deepspace wrote:
| > I still enjoyed reading this article
|
| I am sorry, but I have to disagree. The stilted, repetitive,
| one sentence per paragraph style is so obtrusive and so
| reminiscent of blog spam that I could not focus on the content.
|
| At the end of the day, all the author does is re-brew a cup of
| coffee with used grounds. Who has not tried that at least once
| (and went blegh and never tried it again)? To me, the article
| is as content-free as it is hard to read.
| NoahTheDuke wrote:
| > I am sorry, but I have to disagree.
|
| You disagree that they enjoyed the article?
| lzooz wrote:
| I'll have this printed for when I become a bum
| aliqot wrote:
| Charmin is cheaper
| dgacmu wrote:
| Oof. This article is horribly painful to read. Tl;dr: it's
| exactly what you'd expect. Weak and not as tasty. Cold brewing it
| might work best. Less than half the caffeine of the first
| extraction. Don't let wet coffee grounds stay in the counter
| overnight to gather mold and bacteria before reusing.
| [deleted]
| cypress66 wrote:
| If you've ever done a salami shot, it will be obvious that
| reusing grounds like this will never work, at least assuming you
| want your coffee to taste any good.
| kotaKat wrote:
| There are companies of yesteryear that sold products like this to
| "reroast grounds".
|
| https://www.youtube.com/watch?v=39g6utADRzs
|
| They're awful.
| momirlan wrote:
| totally agree with grandma : nothing wrong with a second, decaf
| brew. my grandma, in the old times, used the burned crust from
| the home made bread for the morning coffee. peasants could not
| afford real coffee. it was similar to chicory coffee, not too
| bad.
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(page generated 2022-11-27 23:01 UTC)