In principle, tin foil is disposable. In actual use, if the tin foil is not dirty (for example, it is only used to cover the surface to block heat) or it is easy to clean, it can be reused. If it is severely damaged or the surface is blackened, it is not recommended to use it repeatedly.
The main function of tin foil
When we do barbecue, some foods (such as sweet potatoes, golden mushrooms, etc.) must be wrapped in tin foil to avoid burning and retain the freshness.
Tin foil can also generate electricity and transfer heat. When we perm our hair, we also wrap our hair with tin foil to heat it, which has a better heat transfer effect.
It can also absorb oil. If you roll the tin foil into a ball and open it, you can absorb the oil in the soup. The principle is that the surface tension of the tin foil will be magnified during the process of crumpling the tin foil.