The teapot for eating is made of enamel. Enamel, also known as enamel, is a kind of composite material that combines inorganic glassy materials with matrix metals through melting and curing. Enamel is an inorganic glass glaze coated and burned on the surface of metal blank. The enamel coating on the metal surface can prevent the metal from rusting, so that when the metal is heated, it will not form an oxide layer on the surface, and it can resist the corrosion of various liquids.