This is a wheel thrown coffee pour over ***mug sold separately*** made from a stoneware clay body which is one of the most durable clay bodies. Once thrown its then trimmed and bisque fired. Once bisqued, the piece is glazed with a glossy glaze and fired to cone 6, which is roughly 2200 degrees Fahrenheit. The piece is then ready for use! All wares are microwave and dishwasher safe.