What is the reason for using aluminium foil to wrap  food items?

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Ancient One Profile
Ancient One answered

I primarily use it to cook with, or as previously said, keep food warm. I have been known to freeze a "soda / pop can" in foil. It keeps the cold in also.

RIK RZ Profile
RIK RZ answered

Umair rehan explained most of it but as an extra fact

Those facts umair rehan gave also apply to some other metal that I can't remember the name of but they don't use the other metal because it is poisonous

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