Amakusa Toujiki (天草陶磁器) is a collective term for ceramics produced in the Amakusa region of Kumamoto Prefecture. The name "Amakusa Toujiki" was newly coined when the craft was designated as a national traditional craft (Dentou-teki Kougeihin). The tradition encompasses four main production areas — Uchida Sarayama-yaki, Takahama-yaki, Mizunodaira-yaki, and Maruo-yaki — each with a distinct history and aesthetic character. As part of the broader tradition of Japanese ceramics, Amakusa Toujiki is notable for its use of high-purity Amakusa pottery stone, which enables the production of translucent porcelain.
History
The earliest documented kiln activity in the Amakusa region dates to around 1676 (Enpo 4), when porcelain was first fired at Uchida Sarayama. Uchida Sarayama-yaki is regarded as the oldest porcelain production site in Kyushu, with origins in the 17th century. The kiln subsequently ceased production but was revived in 1970 (Showa 45) and became a Kumamoto Prefecture traditional craft in 1981 (Showa 56).
Takahama-yaki was founded in 1762 (Horeki 12), when local village headman Ueda Denemon invited potters from Hizen Province to fire porcelain in Takahama village. The kiln attracted the attention of the Nagasaki Magistrate (Nagasaki Bugyo) due to its high quality and primarily produced export goods destined for the Netherlands. Takahama-yaki ceased production in the mid-Meiji period before being revived in 1952 (Showa 27) by Ueda Tooseki Goshi Kaisha, a pottery stone sales company. Takahama-yaki shares its origins in Hizen Province pottery traditions with other Kyushu kilns such as Mikawachi-yaki from Nagasaki.
Mizunodaira-yaki kiln was established in 1765 (Meiwa 2) and is said to be the originator of namako-yu (sea cucumber glaze). Maruo-yaki was established in 1845 (Koka 2), at the end of the Edo period.
Techniques & Production Process
Amakusa ceramics are produced using high-purity, high-quality Amakusa pottery stone as the primary raw material. This material supports both porcelain and stoneware production across the four kiln areas.
A defining technique associated with Amakusa ceramics is the double-glazing method (nijū-gake), used to produce namako-yu (sea cucumber glaze) and black glaze on stoneware. Mizunodaira-yaki is particularly associated with this approach; aka-namako (red sea cucumber glaze) is a representative glaze of that kiln. Uchida Sarayama-yaki produces celadon (seiji), white porcelain (hakuji), and sometsuke (underglaze blue) wares. Takahama-yaki employs gosu (cobalt blue) designs applied to a white ceramic surface, as well as nishikide (polychrome overglaze) decoration. The double-glazing stoneware tradition of Amakusa can be compared to the namako-glaze techniques also seen in Ryumonji-yaki from Kagoshima.
How to Identify Amakusa Toujiki
Amakusa ceramics are characterized by translucent porcelain resulting from the use of high-purity Amakusa pottery stone. Each of the four kiln areas has distinct identifying features. Mizunodaira-yaki stoneware displays a bluish-black surface appearance produced by namako-yu (sea cucumber glaze). Takahama-yaki is recognized by cobalt blue (gosu) designs on a white ceramic surface and by decorative motifs inspired by Kirishitan (Christian) culture; early Takahama pieces are further distinguished by their nishikide (polychrome overglaze) style. Uchida Sarayama-yaki can be identified through its celadon, white porcelain, and sometsuke underglaze blue wares.
The Craft Today
Amakusa Toujiki continues to be produced across its four traditional kiln areas in Kumamoto Prefecture. The craft holds national traditional craft designation, under which the name "Amakusa Toujiki" serves as the collective designation for all four production areas. Works representing the craft are available through retail channels including Dentou Kogei Aoyama Square, located at 8-1-22 Akasaka, Minato-ku, Tokyo, which is operated by the General Incorporated Foundation for the Promotion of Traditional Craft Industries (一般財団法人 伝統的工芸品産業振興協会) and is open from 11:00 to 19:00 year-round except for year-end and New Year holidays. Amakusa Toujiki is one of several ceramics traditions from Kumamoto Prefecture; another is Shoudai-yaki, a distinct folk pottery tradition from the same region.
Frequently Asked Questions
What does "Amakusa Toujiki" mean?
"Amakusa Toujiki" is a collective term for ceramics fired in the Amakusa region of Kumamoto Prefecture. The name was newly created when the craft received national traditional craft designation.
What are the four kiln areas of Amakusa Toujiki?
The four main production areas are Uchida Sarayama-yaki, Takahama-yaki, Mizunodaira-yaki, and Maruo-yaki, each with its own history and production characteristics.
What makes Amakusa ceramics distinctive as a material?
Amakusa ceramics are characterized by the use of high-purity, high-quality Amakusa pottery stone, which enables the production of translucent porcelain.
What is namako-yu and which kiln is associated with it?
Namako-yu is a sea cucumber glaze that produces a bluish-black appearance on stoneware surfaces. Mizunodaira-yaki is said to be the originator of this glaze, and aka-namako (red sea cucumber glaze) is a representative glaze of that kiln. The double-glazing technique (nijū-gake) is used to apply it.
Which Amakusa kiln has the longest documented history?
Uchida Sarayama-yaki is said to be the oldest porcelain production site in Kyushu. Porcelain was fired there from around 1676 (Enpo 4). The kiln ceased production at some point but was revived in 1970 (Showa 45) and became a Kumamoto Prefecture traditional craft in 1981.
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