Staub 5-Quart Country Casserole, Black Matte Black Matte Enameled Interior for durablity means no seasoning required. Enameled pot edges and lid edges prevent rust adding to the beauty of our cast iron. Self-basting spikes underneath the lid of each French Oven is our breakthrough innovation.These spikes ensure continuous natural basting by equally disributing flavorful juices to all parts of the dish. Oven proof stainless steel or brass knobs for durability and beauty. Smooth Enameled bottom that works on any cooking surface including glass tops and convection. Double the enamel coatings help prevent chipping and add to the beauty and function of the pan.