Pomaireware Clay Individual Frog Baking Dish, 12 Ounce Leadfree clay that retains the moisture-hot food stays hot. Can be used on the stovetop (electric w/diffuser), oven proof up to 450F., microwave safe Recipe pamphlet provided with each piece. Great for one pot meals-you can reheat without losing the taste of the food Each piece has its own blemishes and character