-Flame Top Casserole works directly on a gas flame or an electric or halogen hob without a diffuser and without fear of cracking or breaking. Extremely durable and versatile, it can also be used in the broiler or oven and transported directly to the table, refrigerator, or freezer. Much lighter than many comparable metal cookware products and 30% lighter than cast iron, it cleans up easily and is both microwave and dishwasher-safe. Plus, cooking in ceramic is still the best way to preserve the flavors and nuritional qualities in food, as well as develop the aromas. The convenient lid features small bumps on its underside that favor the condensation process and return important vapors back into the food.