Our donabe and Iga-yaki products (made by Nagatani-en of Iga, Japan) are proven to be safe and the glaze is lead-free and cadmium-free. The glaze can be made of a wide variety of ingredients such as minerals and clay. Each of Nagatani-en's pottery products are made with care by the skilled craftsmen. Nagatani-en is one of the leading and most trusted donabe and pottery producers in Japan.