Cast-iron or steel pots and pans that have been completely coated with thin layers of brightly colored enamel. Enamelware is a good heat conductor, easy to clean and doesn't interact with food to impart off-flavors. Light-colored enameled surfaces do not brown food well; they will also discolor over a long period of use. Overheating enamelware may cause the surface to crack. Care must be taken not to use abrasives to clean enamel as it easily scratches.