Tin paper can be put directly on the fire, but it is not recommended to put on the fire for a long time. Because of the high melting point of tinfoil heated to more than 160 degrees before it begins to embrittle. Tin foil is processed with aluminum foil mill thickness of 0.02mm below the sheet, most of the tin foil on the market has a bright side, and the other side of the matte used to package food, drugs or cosmetics. Some food in the barbecue, wrapped in tinfoil burn, to avoid burning, wrapped in tinfoil to burn seafood, golden mushroom dishes, etc., can retain the fresh flavor.