Staub Reversible Grill, 13 3/4 Inchx 8 5/8 Inch Black Matte Enameled Interior for durablity means no seasoning required. Smooth Enameled bottom that works on any cooking surface including glass tops and convection. Requires no seasoning and will not discolor or rust Restaurant tested and proven to be the best in the industry, chefs use it everyday in thousands of restaurants world- wide.