Traditional craft
Sado Mumyoi Yaki
佐渡無名異焼
Red stoneware from Sado island, from iron-rich mumyoi clay that shrinks by a third, burnished, and polished with gold-mine slag.
Key facts
- Officially recognised
- 17 October 2024
- Type
- Ceramics
- Region
- Chubu
- Official name in Japanese
- 佐渡無名異焼
- Official area (in Japanese)
- 佐渡市
Red clay from a gold island
Mumyoi ware is made from mumyoi-do, a red clay rich in iron oxide. The clay is so fine that it shrinks about 30 percent between forming and drying, and it fires very hard. Pieces are burnished before and after firing, and their sheen grows with use into a calm, deep colour. Each kiln now has its own style of glaze and form. Products include teacups and teapots, sake ware, vases, plates, beer cups and chopstick rests. It is made on Sado island in Niigata.
Refined, burnished, polished
- The clay is refined in water, then passed through silk mesh, which makes it extra fine.
- After forming, the piece is burnished with stones or iron spatulas while still green.
- It is fired hard at high temperature.
- Afterwards it is polished with slag from the refining of the Sado gold mine, giving its unique gloss.
From raku to stoneware
Red raku ware mixed with mumyoi clay began in the early 19th century. In the Meiji period potters completed today's mumyoi ware, fired hard at high temperature. It was designated a traditional craft in 2024.
Good to know
- Use it every day: the polish deepens the more the piece is handled.
- Pair a visit with the Sado gold mine, whose refining slag polishes the finished pots.
Questions travellers ask
Why does mumyoi ware shrink so much?
Its clay is very fine-grained, shrinking about 30 percent before firing.
What gives it its shine?
Burnishing before firing and polishing with gold-mine slag after.
Where it comes from
More crafts from the same area
Local foods from the same area
Heritage stories from the same area
Sources
We checked the facts on this page against these sources.