This yunomi was crafted from a high-fire grolleg porcelain and woodfired in the East Creek Anagama originally built in Korea and later transported and rebuilt here in Oregon.. The inside is lined with celadon, and the outside is surfaced with microcrystalline glazes and water-etchings. This yunomi is intended to be a daily user and is safe to use in the dishwasher and microwave. 4" x 4.25" x 3.5" holds approx. 8+ oz.