ceramicsJuly 24, 2026

Tobe-yaki

Tobe-yaki (砥部焼) is a ceramics tradition produced mainly in Tobe-cho, Iyo-gun, Ehime Prefecture, with origins as an organized industry dating to 1777. It was designated as a Traditional Craft by the Ministry of International Trade and Industry on December 15, 1976, becoming the sixth pottery tradition to receive such designation. Tobe-yaki is also designated as an Ehime Prefecture Intangible Cultural Property. In modern times, the craft primarily produces everyday tableware. For broader context on Japanese ceramic traditions, see Japanese Ceramics: The Complete Guide.

History

The ceramic stone used for Tobe-yaki was originally produced as "Iyo-to" whetstones for sharpening swords during the Edo period. Porcelain making began in the mid-Edo period using inferior scrap whetstone material, as potters sought a stable industry. The origin of Tobe-yaki as a formal industry is dated to 1777 (Anei 6). An Osaka merchant named Izumiya Jihei proposed to the Ozu Domain that porcelain could be produced from Iyo whetstone scraps, having learned that Amakusa whetstone scraps were already being used for porcelain production elsewhere. The ninth domain lord, Kato Yasutoki, ordered porcelain production as a means to improve the domain's finances. Potter Sugino Josuke constructed a climbing kiln of 4.5 chambers at Gohonmatsu in Tobe village, and on December 10, 1777, the first white-ground blue-colored pottery was successfully fired.

In 1813 (Bunka 10), Mukai Genji built a kiln at Gohonmatsu, establishing what became the Aizan kiln, which operated until its closure in 1922 (Taisho 11). In 1818 (Bunsei 1), Mukai Genji discovered higher-quality ceramic stone at the bottom of the Kawanobori river, upstream of the Tobe River. By the Kaei period in the mid-19th century, there were approximately 15 kilns in Tobe. In 1848 (Kaei 1), brick kilns known as "Tombari" were introduced, and in 1851 (Kaei 4), Kido Genroku devised a bisque firing kiln. By the late Edo period, Tobe village had 17 kilns whose total production value was comparable to that of rice production.

From around 1872 (Meiji 5), sales routes expanded nationwide via Karatsu ships from Matsumae. By around 1894 (Meiji 27), more than half of Tobe's working population was engaged in the ceramics industry. In 1890 (Meiji 23), the Mukai kiln succeeded in producing a pale yellow porcelain called "tan'oji," inspired by Chinese Jianyao pottery. This ware was exhibited at the Chicago World's Fair in 1893 and received a first-place evaluation. A ceramics supplementary school was founded in 1906 (Meiji 39), and in 1915 (Taisho 4) it became the village-run Tobe Industrial Apprentice School. In 1966 (Showa 41), a craft course was established at the Tobe Branch of Ehime Prefectural Matsuyama Minami High School to train pottery workers.

The Tobe-yaki Traditional Industry Hall opened in April 1989, and within five years of opening it welcomed 200,000 visitors. By 1994, shoppers visiting Tobe-cho to purchase Tobe-yaki exceeded 500,000 people, with approximately 60,000 from within the town, approximately 180,000 from neighboring municipalities, and approximately 360,000 from outside the prefecture; at that time there were 90 kilns operating in the area. On December 27, 2005, Tobe-yaki was formally designated as an Ehime Prefecture Intangible Cultural Property, with Sakai Yoshimi (art name: Yoshito) of Gohonmatsu certified as technique holder.

In November 2025, Iyo Mining — the last sole producer of Tobe ceramic stone, founded in 1973 and operated by the third-generation owner — stopped accepting orders due to the owner's health issues and ended crushing operations at the end of November 2025. Iyo Mining had employed five workers and shipped four tons of clay per month to 70 kilns. The company had been the sole producer of Tobe ceramic stone for 20 years following the consolidation of competitors. The cessation of its operations posed a significant materials challenge for the craft's continuation.

Techniques & Production Process

Tobe-yaki uses ceramic stone quarried from the Uwaotoge pass as its primary raw material. Clay kneading is carried out mainly using a vacuum clay kneader. Shaping is done primarily on a potter's wheel. Under-glaze painting is applied mainly by hand, using gosu (a cobalt pigment) to produce the characteristic light blue designs on the white porcelain body.

Bisque firing is performed at approximately 900 to 1,000 degrees Celsius for 8 to 17 hours, depending on the product. The main firing (hon-yaki) is conducted at approximately 1,300 degrees Celsius for 15 to 24 hours. This high-temperature main firing contributes to the sturdy and heavy character for which Tobe-yaki is known. Comparable white porcelain traditions employing similar high-fire techniques include Izushi-yaki: White Porcelain from Hyogo and Amakusa Toujiki: Porcelain from Kumamoto.

How to Identify Tobe-yaki

Tobe-yaki is characterized by a slightly thick white porcelain body with hand-drawn light blue designs applied in gosu, a cobalt pigment. Compared to porcelain from other regions, Tobe-yaki is sturdy, heavy, and resistant to cracks and chips. The representative decorative patterns include karakusa-mon (arabesque), taiyou-mon (sun pattern), nazuna-mon, and jugusa-mon, with the karakusa-mon arabesque pattern being the most representative. In Tobe-cho, the craft's local presence is marked by various public installations: the central divider of National Route 33 in Senzoku features vase-shaped monuments measuring 65 centimeters per side, named "Tobe Totokaido." The "Eit-kun" tower is approximately 15 meters tall, features an octagonal form, and incorporates Tobe-yaki ceramic panels. A Tobe-yaki sacred fire monument stands approximately 4 meters tall including its base, with a diameter of approximately 1 meter.

The Craft Today

In modern times, Tobe-yaki primarily produces everyday tableware. The product composition has shifted considerably over the decades: as of 1975, approximately 50 percent of output consisted of vases and suiban (shallow flower vessels), with tableware accounting for about 35 percent. By 1994, the proportion had reversed, with approximately 65 percent of products being tableware and vases and suiban decreasing to approximately 23 percent. By 1994, the craft supported approximately 90 kilns in the Tobe-cho area and attracted more than 500,000 buyers annually to the town.

The craft faces a significant materials challenge following the closure of Iyo Mining's crushing operations in November 2025. As the last sole producer of Tobe ceramic stone for two decades, Iyo Mining had supplied approximately 4 tons of processed clay per month to 70 kilns. The search for alternative raw material sources is now a pressing concern for producers. Other regional folk pottery traditions that have navigated questions of materials and heritage continuity include Koishiwara-yaki: Folk Pottery from Fukuoka, Otani-yaki: Large-Scale Pottery from Tokushima, and Mashiko-yaki: Folk Pottery from Tochigi.

Frequently Asked Questions

When did Tobe-yaki originate?

The origin of Tobe-yaki as an organized industry is dated to 1777 (Anei 6). The first white-ground blue-colored pottery was successfully produced on December 10, 1777, at a climbing kiln built by Sugino Josuke at Gohonmatsu in Tobe village.

What makes Tobe-yaki distinctive compared to other Japanese porcelain?

Tobe-yaki is characterized by a slightly thick white porcelain body, hand-drawn light blue designs in gosu (cobalt pigment), and a sturdy, heavy construction that makes it resistant to cracks and chips. These qualities distinguish it from the thinner, more delicate porcelains produced in other regions.

What are the most common patterns found on Tobe-yaki?

The representative patterns include karakusa-mon (arabesque), taiyou-mon (sun pattern), nazuna-mon, and jugusa-mon. Of these, the karakusa-mon arabesque is considered the most representative pattern of the tradition.

When was Tobe-yaki designated as a Traditional Craft?

Tobe-yaki was designated as a Traditional Craft by the Ministry of International Trade and Industry on December 15, 1976, making it the sixth pottery tradition to receive this national designation. It was separately designated as an Ehime Prefecture Intangible Cultural Property on December 27, 2005.

What raw material is used to make Tobe-yaki, and why is its supply a concern?

Tobe-yaki uses ceramic stone quarried from the Uwaotoge pass. Iyo Mining, the last sole producer of this Tobe ceramic stone, ceased crushing operations at the end of November 2025 due to the owner's health issues. The company had supplied 4 tons of clay per month to 70 kilns and had been the sole supplier for approximately 20 years, making the continuity of raw material supply an urgent issue for the craft.