Eli5 why is it that food can be left in steamers and under heat warming lamps for hours but it harbors harmful bacteria if you leave it in a hot place like a car for a few hours?
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Bacteria reproduce more effectively in hotter climates but after a certain point they just die. A car won’t reach that point but a steamer will. Similar to how yoghurt is made. Milk is heated up really hot (about 100c) to kill all germs and then lowered (about 45c) so bacteria samples can reproduce.
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