No need to add steam to your oven as the refactory ceramic creates the right level of humidity during baking for the perfect crust. Emile Henry's bakeware and tableware is made in Marcigny France since 1850 from high fired Burgundy clay. The natural clay is unsurpassed for conducting and retaining heat. Emile Henry's ceramic is made with an exclusive process to produce strong and durable ceramic bakeware and tableware for everyday use. There is no lead or cadmium in Emile’s products, all of the glazes meet California Prop 65, and all of the products are 100% food safe. The glazes will not craze, discolor or fade over time. Oven safe to 500° F.