Vitreous enamel is made by fusing melted glass to metal at a very high temperature. this smooth enamel coating protects the metal underlying your cookware. in many cases, the enamel chips over years of use or as a result of improper care. it's possible to repair these chips or to seek a replacement piece if your enamelware is under warranty. Visit le creuset for cast iron and stainless cookware, bakeware, pots, pans and kitchen & bar tools. shop by color and material or find a store near you. Enamel coating cast iron cookware that makes a chef's work easy enamel coating cast iron cookware is the perfect addition to your culinary collection. because of this type of cookware's vitreous enamel glaze, you don't need to season the pan, worry about rust or use extra care while cleaningand it's ideal for slow-cooking and drawing the flavors from the foods your family loves. Porcelain enamel frit, vitreous enamel, porcelain enamel, blue porcelain, white porcelain, paste porcelain, meissen porcelain, glaze, clay, glass, soapstone, lime, chemical properties 1) enamel powder often is applied as a paste, and may be transparent or opaque when fired; vitreous enamel can be applied to most metals.