this post was submitted on 24 Sep 2023
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Here's the thing. If the plastic is not microwave safe, then it is not any-sort-of-heat safe. The microwave is simply a heating device. The method is different but at the end of day, it vibrates molecules to heat em up.
Most people wouldn't put plastic on a stovetop or in an oven to begin with. Where else is plastic typically heated with food in it?
Most fast food restaurants and food processing plants. Hot dogs in the plastic casing as they are heated in the factory. Fast food (taco places have meat bags that they heat up before cutting open for use).
Plenty of sit down restaurants too. Your side of veggies or mash potatoes came in a plastic container with butter and salt added, and is then microwaved. Nicer places will often finish some of those sides on a grill or stovetop, but you already got plastic'd
When you put hot food in it.
Maybe in a sous vide? But a separate issue will be already-quite-hot food being put into plastic. Think they let your takeout noodles/soup cool before putting it in a plastic container?
Baby bottles. We use a bottle warmer that heats the bottle with steam, but yeah, I'd say breast milk/formula counts. That being said, I don't think I've ever seen bottles not rated as being safe for bottle warmers? And you'd never put a bottle in a microwave (process is too harsh on breast milk and consequently ruins much of its nutritional value, not sure about formula).
Don't bother. The people who believe this shit, want to