De Buyer Mineral B cookware is coated in an all-natural beeswax-based protective finish, providing a chemical-free alternative to standard non-stick cookware. Made from 100% natural mineral materials, this iron wok can be heated (on all cooktops, including induction) to high temperatures to quickly sear and brown food, while the sloped sides make tossing and turning ingredients easy. As you continue to use your Mineral B cookware the iron will season, naturally darken and perform more effectively for all your non stick cooking needs.