Emile Henry dishes are microwave safe, broiler safe (as long as the dish is not too close for short periods of time and is 3/4 full), safe to move from freezer to oven, oven safe to 480 degrees, easy to clean dishwasher safe, avoid putting a hot dish on a cold or wet surface. No need to grease baking dishes as the smooth glaze will prevent sticking. Emile Henry “Flame” dishes are made of heat-resistant ceramic and may be used in the oven, microwave, on grills or in the broiler. Made in France.