https://en.wikipedia.org/wiki/Milk_watcher Jump to content [ ] Main menu Main menu move to sidebar hide Navigation * Main page * Contents * Current events * Random article * About Wikipedia * Contact us * Donate Contribute * Help * Learn to edit * Community portal * Recent changes * Upload file [wikipe] Wikipedia The Free Encyclopedia Search [ ] Search * Create account * Log in [ ] Personal tools * Create account * Log in Pages for logged out editors learn more * Contributions * Talk Contents move to sidebar hide * (Top) * 1Description * 2Explanation * 3History * 4References * 5External links [ ] Toggle the table of contents Milk watcher [ ] 13 languages * Catala * Dansk * Deutsch * Espanol * Francais * hangugeo * Italiano * Latina * Ri Ben Yu * Russkii * Svenska * Ukrayins'ka * Zhong Wen Edit links * Article * Talk [ ] English * Read * Edit * View history [ ] Tools Tools move to sidebar hide Actions * Read * Edit * View history General * What links here * Related changes * Upload file * Special pages * Permanent link * Page information * Cite this page * Get shortened URL * Download QR code * Wikidata item Print/export * Download as PDF * Printable version In other projects * Wikimedia Commons From Wikipedia, the free encyclopedia Cooking utensil [220px-Milchwaechter_porcelain]Porcelain milk watcher - notice that there is one notch on each side, and how the interior slants toward the notch [220px-Anti-monte-lait_en_Pyrex]Glass milk watcher [220px-Milchwaechter_Edelstahl]Stainless steel milk watcher A milk watcher, milk saver, pot watcher, pot minder, milk guard, or boil over preventer is a cooking utensil placed at the bottom of a pot to prevent the foaming boil-over of liquids by collecting small bubbles of steam into one large bubble. Description[edit] A milk watcher is a disk with a raised rim notched on one side. Some milk savers are designed so they can be used with the obverse or reverse side facing up and appear to have two notches. The interior of the disk slants upward toward the notched side, creating a space just behind the notch where water vapor can collect. Water vapor trapped under the milk saver causes the notched side to rise up, releasing the water vapor and making a rattling noise as the saver falls back into contact with the base of the pan.^[1]^[2] Explanation[edit] Normally, boiling water does not boil over. When fats, starches, and some other substances are present in boiling water, for example by adding milk or pasta, boiling over can occur. A film forms on the surface of the boiling liquid; for example, cream can boil over as milk fat separates from the milk.^[3] The increased viscosity of the liquid causes the steam bubbles to form foam trapped under the film, pushing the film up and over the lip of the pot, boiling over. A milk watcher disrupts this process by collecting small bubbles of steam into one large bubble and releasing it in a manner which may puncture the surface film. The device also rattles when boiling occurs, alerting the cook who may then lower the heat setting of the stove. By circulating fluid around the bottom of the pot the device may also prevent material from being deposited and eventually burned on the pot's bottom.^[4] History[edit] The milk watcher was invented by I. F. Ivankovitser in 1921; a patent was obtained in 1929.^[5] It was reinvented by Vincent Hartley in 1938.^[6] References[edit] 1. ^ Solidex Milk Saver directions 2. ^ "Milk maid". New Scientist. Vol. 91, no. 1269. September 3, 1981. p. 618. ISSN 0262-4079. 3. ^ "Why does Milk spill over when it Boils?". 9 October 2002. Archived from the original on May 4, 2008. Retrieved 2009-03-19. {{cite web}}: CS1 maint: bot: original URL status unknown (link) 4. ^ What is Scorching or Scalding Milk? 5. ^ Patient [1] 6. ^ History of Hartley Botanic External links[edit] * #Cooking portal # Media related to Milk watcher at Wikimedia Commons * v * t * e Kitchen tools * Kitchenware + Cooking vessel + Cookware and bakeware + Cutlery + Dishwashing + Eating utensils + Food preparation utensils + Food storage container + Tableware + Teaware * Apple corer (Apple cutter) * Baster * Beanpot * Blowtorch * Bottle opener * Bowl * Bread knife * Browning tray * Butter curler * Cake and pie server * Candy thermometer * Can opener * Cheese cutter * Cheese knife * Cheese slicer * Cheesecloth * Chef's knife * Cherry pitter * Chinois * Chopsticks * Citrus reamer * Clay pot * Cleaver * Colander + Mated colander pot * Cookie cutter * Cookie press * Corkscrew * Crab cracker * Cutting board * Edible tableware * Egg piercer * Egg poacher * Egg separator * Egg slicer * Egg timer * Fat separator * Fillet knife * Fish scaler * Fish slice * Flour sifter * Food mill * Funnel * Garlic press * Grapefruit knife * Grater * Gravy strainer * Honey dipper * Honing steel * Ladle * Lame * Lemon squeezer * Lobster pick * Mandoline * Measuring cup * Measuring spoon * Meat grinder * Meat tenderizer * Meat thermometer * Melon baller * Mezzaluna + Herb chopper * Microplane * Milk frother * Milk watcher * Mortar and pestle * Nutcracker * Nutmeg grater * Oven glove * Pastry bag * Pastry blender * Pastry brush * Pastry wheel * Peel * Peeler * Pepper mill * Pie bird * Pizza cutter * Potato masher * Potato ricer * Pot-holder * Poultry shears * Roller docker * Rolling pin * Salt and pepper shakers * Scissors * Scoop * Sieve * Slotted spoon * Spatula * Spider * Strawberry huller * Tamis * Tomato knife * Tongs * Trussing needle * Twine * Weighing scale * Whisk * Wooden spoon * Scraper + Dough * Zester * # Categories + Kitchenware * # Commons + Kitchen utensils Types of tools Cleaning Cutting and abrasive Forestry Garden Hand Kitchen Machine and metalworking Masonry Measuring and alignment Mining Power Woodworking * Retrieved from "https://en.wikipedia.org/w/index.php?title= Milk_watcher&oldid=1212275040" Categories: * Food preparation utensils * Milk * 20th-century inventions * Products introduced in 1921 Hidden categories: * CS1 maint: bot: original URL status unknown * Articles with short description * Short description matches Wikidata * Commons category link from Wikidata * This page was last edited on 7 March 2024, at 00:48 (UTC). * Text is available under the Creative Commons Attribution-ShareAlike License 4.0 ; additional terms may apply. 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