Enamel is basically a thick layer of paint which is used to coat stainless steel, glass, ceramic, or any other metal. The main purpose for enameling any cookware is to improve its durability and preventing it from rusting. Enamel cookware has been used since the 1700s and even today it is very popular.
Heavy pots and pans made of cast iron are usually enameled. It is a very safe cookware as it prevents the metal from leaking into the food, making the food taste good. You can find enameled cookware in various colors and designs which also look very attractive. However, one need to take extra care as extreme change of temperature can chip the enamel coating. Although they are dishwasher safe but care should be taken to see that the cookware is first cooled down before washing. When hand washing enamel cookware, make sure that only a soft scrub is used.
Source: Best Cookware