Porcelain Enamel Porcelain enamel is a form of glass bonded to metal at high temperature. Porcelain enamel is quite simply the highest quality, most durable and sanitary finish available for metallic surfaces. Porcelain enamel is an ancient art which has survived and been transformed in modern times into a unique protective and decorative coating for metals. Porcelain enamel begins as a blend of raw materials smelted in much the same way as common glass. During this process (known as "fritting"), the hot, molten mixture is poured from a smelter and water-quenched and then dried. Frit is applied to metal either a wet or dry method and fired at very high temperatures - generally ranging from 760 to 880 degrees Centigrade. While in the furnace, the frits melting bond with the metal to create more than a coating.