Shigaraki ware (信楽焼, Shigaraki-yaki) is one of Japan’s Six Ancient Kilns, produced in and around Koka City in Shiga Prefecture — the region’s pottery centre before modern municipal consolidation was called Shigaraki Town. Shigaraki’s distinctive clay, fired in wood-burning anagama kilns, produces characteristically coarse-textured pieces with natural wood-ash glaze accumulations and warm orange-tan-brown surfaces. In tea ceremony culture, Shigaraki is highly prized for its wabi character — particularly in water jars (mizusashi) and flower vases (hanaire). Outside tea culture, Shigaraki is best known for producing the iconic Japanese tanuki (raccoon dog) garden statues that remain among Japan’s most recognisable cultural emblems.
In-Depth Explanation
The clay:
Shigaraki clay is sourced from an ancient lake bed (Lake Biwa basin sediment) and is characterised by:
- High feldspar content producing distinctive natural vitrification
- Coarse grog inclusions — visible as black specks and rough texture in the fired piece
- Natural orange-tan base colour from iron content
- Ability to withstand very high firing temperatures
The coarse, gritty texture of Shigaraki clay is a defining aesthetic feature, not a manufacturing defect. Potters choose Shigaraki clay specifically for this quality.
Firing and surface effects:
Like Bizen, Shigaraki pieces are typically fired in wood-burning anagama kilns with long, high-temperature cycles. Key surface effects:
| Effect | Character | Cause |
|---|---|---|
| Shizen yu (natural ash glaze) | Glassy, flowing areas of melted ash | Wood ash settlement during long firing |
| Hi-iro (fire colour) | Warm orange, pink, and red hazing | Flame impingement and clay iron oxidation |
| Ko-koge (light scorching) | Carbon-blackened patches | Smoke reduction during firing |
| Ishi-haze (stone bursting) | Tiny pockmarks where feldspar flecks have popped | Silica flecks expanding at high temperature |
The ishi-haze pockmarks are a Shigaraki signature — considered a charm mark that adds tactile interest and proves the authenticity of the firing process.
Tea ceremony uses:
Shigaraki excels in larger tea ceremony utensils rather than tea bowls:
- Mizusashi (水指, water jar): The vessel that supplies fresh water during the tea ceremony; Shigaraki mizusashi are among the most important pieces in the tradition, associated with the wabi aesthetics championed by Sen no Rikyū
- Hanaire (花入, flower vase): Rustic Shigaraki cylinders or irregular forms for chabana (tea ceremony flowers)
- Mizutamari (water storage vessels): Large Shigaraki jars and pots have been used for water storage in Japanese farmhouses for centuries
The tanuki connection:
Shigaraki’s global name recognition outside tea culture comes from the iconic raccoon dog (tanuki, 狸) ceramic statues produced there since the early 20th century. The Shigaraki tanuki, with its oversized belly, sake bottle, and straw hat, became a fixture of Japanese restaurant and business entrances (symbolising good fortune). Emperor Shōwa’s visit to a Shigaraki pottery exhibition in 1951 — at which tanuki lined the railway tracks — reportedly brought the tradition to national attention.
History
Shigaraki pottery tradition dates to the Nara period (8th century CE), when the imperial court considered establishing a new capital in the area (the short-lived Shigaraki-no-Miya palace, 742–745 CE) and required ceramic roof tiles — establishing the region as a ceramics producer. Production continued through medieval times in storage vessels. The association with tea ceremony aesthetics developed in the Muromachi and Momoyama periods; the first documented connection is with the tea master Murata Jukō (Shukō) in the 15th century. Sen no Rikyū’s elevation of Shigaraki water jars to the highest ceremonial status of any Japanese-made vessels established the kiln’s permanent place in tea culture.
Common Misconceptions
“Shigaraki tanuki statues represent the best of Shigaraki ceramic art.” The tanuki statues are a popular commercial product from the same region but represent a completely separate production stream from the artisan ceramic tradition associated with tea ceremony. Artisan Shigaraki production — hand-thrown or formed pieces fired in anagama kilns — is a serious studio ceramic art quite distinct from the souvenir trade.
Related Terms
See Also
Research
- Cort, L.A. (1979). Shigaraki, Potters’ Valley. Kodansha International.
[The definitive English-language monograph on Shigaraki ware; covers the full history from Nara-period roof tiles through modern studio ceramics, with detailed analysis of clay, kiln, and cultural context.]
- Varley, H.P., & Kumakura, I. (1989). Tea in Japan: Essays on the History of Chanoyu. University of Hawaii Press.
[Covers the role of Shigaraki mizusashi and rustic kiln wares in Rikyū’s wabi tea aesthetic.]
Last updated: 2026-04