Le Creuset PG8005-0017 Made from White Stoneware, This Set is Durable and The Enamel Blocks moistur Petite Espresso Mug, 3.5 Ounce, Caribbean Stoneware maintains even temperatures and prevents scorching Unmatched thermal resistance - safe for freezer, microwave, oven, broiler and dishwasher Dense stoneware blocks moisture absorption to prevent cracking, crazing and rippling Impermeable exterior enamel resists scratches and stains and is safe for cutting on with knives Nearly-nonstick glazed interior easily releases foods for quick cleanup