Potatoes Au Gratin simply aren't the same baked in anything less than the Le Creuset Heritage Oval Au Gratin Dish in Cassis Purple enameled cast iron. The wide, shallow shape of the 3-Quart au gratin dish provides maximum surface area exposure for perfecting crispy toppings. Au Gratins are just one of the recipes that cook to perfection in this piece of cast iron cookware. Be inventive with it by preparing a wide range of dishes from macaroni and cheese to mini lasagnas to Greek spanakopita. Cobblers brown evenly and will look all the more appetizing when served in this elegant cookware classic. Le Creuset Heritage Collection pieces are inspired by classic Le Creuset designs dating back to the 1930s and beyond. All Le Creuset cast iron cookware is suitable for use on all heat sources including electric, gas, ceramic, halogen top and induction. All Le Creuset enameled cast iron cookware is coated with the highest quality vitreous enamel. This hygienic, impermeable enameled surface means Le Creuset can be used for marinating food prior to cooking or for food storage after cooking. Since 1925, the skilled French craftsmen at Le Creuset have perfected enameled cast iron cookware at their factory in Fresnoy Le Grand France. Each Dutch Oven shape is one of a kind, made from molten steel and cast in a unique mold, and then expertly enameled. No other procedure yields cookware that so evenly distributes heat, browns and caramelizes food to perfection, and creates a masterpiece at the table. Warranted for the lifetime of the original owner. Made in France.