You can put tin foil on an open fire and barbecue directly, but the baked food smells smoky, so it's best to barbecue with charcoal fire.

1. Tin paper is a kind of film-like metal paper coated or pasted with silver, mostly silvery white, and the metal component is actually aluminum, not tin. Aluminum foil paper, also known as tin foil in Hong Kong, is a thin sheet with a thickness of less than 0.2 mm. Most aluminum foil paper has a shiny side and a dull side. Mainly used for packaging food, medicine, cosmetics and other chemicals.

2. Aluminum foil paper is usually used to hold food (such as aluminum foil paper plates). When it is used for barbecue, it can wrap bean sprouts, potatoes, sweet potatoes and so on. Used for barbecue to prevent them from burning. Sometimes it is used for decoration. Modern aluminum foil paper is made of aluminum and can also be used as aluminum electrode for electrolysis. There are also hair stylists who use aluminum foil to perm their guests. Some people also use aluminum foil to absorb the oil in the soup. Aluminum foil paper is also widely used for insulation, heat exchange and as a conductor. Generally, the thickness of aluminum foil used in paper-wrapped beverage packaging and food packaging is only 6.5 microns. This thin aluminum layer can be waterproof, keep fresh flavor and prevent bacteria and pollution. It is common to hold food in aluminum foil trays. Although aluminum foil trays are disposable, they are made of aluminum, which is less harmful to nature.

3. The original tin foil is really made of tin, which is softer than aluminum foil and has a little tin smell when wrapping food. At the same time, because of its low melting point, it cannot be heated, or the heating temperature is high-for example, when it reaches 160℃, it will start to become brittle-which limits its use in food packaging. If you need to barbecue food, you can't use tin foil when baking food. Since the existence of aluminum foil paper, due to its high melting point, it began to melt when heated above 660℃. It can be applied to ordinary barbecue food, baked food and even traditional beggar chicken wrapped and baked with aluminum foil, and it is clean and hygienic while maintaining the original flavor. Therefore, after the price of aluminum dropped, aluminum foil replaced tin foil in daily life. However, due to the influence of aluminum metal on brain development, the surface of aluminum foil is coated to avoid the release of aluminum metal.