ceramicsAugust 01, 2026

Kasama-yaki

Kasama-yaki (笠間焼) is ceramic pottery produced in and around Kasama City, Ibaraki Prefecture, with origins dating to the An'ei era of the 1770s during the mid-Edo period. It was designated as a Traditional Craft by the Minister of Economy, Trade and Industry in 1992 under the Law for the Promotion of Traditional Craft Industries.

History

The origins of Kasama ware are traced to two early kilns established during the An'ei era (1770s): Hakoda-yaki, initiated by Kuno Han'emon Michinobe, village headman of Hakoda village, and Shishido-yaki, started by Yamaguchi Kanbei. As production developed, the Kasama domain established an official kiln known as Shiho-gama to increase output and preserve pottery techniques for future generations. This official kiln focused on everyday utilitarian items such as jars (kame) and grinding bowls (suribachi).

From the end of the Edo period through the Meiji era, Kasama ware expanded significantly in production due to its geographical proximity to Edo (present-day Tokyo). Pottery merchant Tanaka Tomosaburo played a notable role in broadening the sales channels for Kasama ware during this period of growth.

After World War II, young ceramic artists from across Japan gathered in Kasama, drawn by an atmosphere of creative freedom unconstrained by established tradition. This influx helped shape the diverse and individualistic character of modern Kasama ware. In 1992, the craft received official recognition as a designated traditional craft. In 2020, Kasama ware was further designated as part of Japan Heritage under the title Kasama Mashiko, together with Mashiko-yaki from Mashiko Town, Tochigi Prefecture.

Techniques & Production Process

Kasama ware is produced using local Kasama clay, which is extracted from the Kanto Loam layer. This clay originates from weathered and deposited hornblende granite extending from the Kasama area toward Mt. Tsukuba. Kasama clay is characterized by high plasticity, making it well-suited for shaping. Its iron content causes it to develop color during the firing process. These material properties underpin the wide variety of forms that Kasama potters produce, ranging from functional everyday vessels to artistic objects. The broad creative latitude exercised by individual artists means that forming and decorative techniques vary considerably across the production community, reflecting the craft's emphasis on individual expression rather than a single prescribed method.

How to Identify Kasama-yaki

Kasama ware is frequently described as having "no distinguishing characteristic as its distinguishing characteristic." Unlike many Japanese ceramic traditions defined by a recognizable glaze, form, or decorative convention, Kasama-yaki encompasses a wide spectrum — from inexpensive practical water jars and sake bottles to artistically innovative objects. The fired color of pieces is influenced by the iron-bearing local clay, though the diversity of individual artists' approaches means no single visual trait uniformly identifies the ware. Kasama ware is also recognized as a regional collective trademark, which provides an administrative means of attribution.

The Craft Today

Kasama ware is currently produced by close to 300 ceramic artists and kiln operators, making it one of the more active ceramic production communities in Japan. Alongside Mashiko-yaki, Kasama ware is recognized as one of the two major ceramic production areas in the Kanto region. The craft spans a broad range of output, from affordable utilitarian wares to works conceived as art objects.

The annual spring Himatsuuri (Touen Festival), held at the Kasama Arts Forest Park on the east side of JR Kasama Station, draws approximately 500,000 visitors. In 2014, attendance reached 488,000, an increase of 20,000 from the preceding year. Kasama ware is also represented at Dentou Kogei Aoyama Square (located at 8-1-22 Akasaka, Minato-ku, Tokyo), a venue operated by the General Foundation for the Promotion of Traditional Craft Industries, which is open from 11:00 to 19:00 year-round except during the New Year holiday period.

Frequently Asked Questions

When did Kasama-yaki originate?

Kasama ware began being produced during the An'ei era of the 1770s, in the mid-Edo period. Its origins are traced to two early kilns: Hakoda-yaki, started by village headman Kuno Han'emon Michinobe, and Shishido-yaki, started by Yamaguchi Kanbei.

What makes Kasama clay distinctive?

Kasama clay is extracted from the Kanto Loam layer and is formed from weathered hornblende granite extending from the Kasama area toward Mt. Tsukuba. It is highly plastic and easy to shape, and its iron content causes pieces to develop color after firing.

Is Kasama-yaki an officially recognized traditional craft?

Yes. In 1992, Kasama ware was designated as a traditional craft by the Minister of Economy, Trade and Industry under the Law for the Promotion of Traditional Craft Industries. It is also designated as a regional collective trademark and, in 2020, was included in Japan Heritage as part of the Kasama Mashiko designation together with Mashiko ware.

How many potters and kilns are active in Kasama today?

Currently, Kasama ware has close to 300 ceramic artists and kiln producers active in the area.

What is the Himatsuuri festival?

The Himatsuuri, or Touen Festival, is a spring ceramic festival held at the Kasama Arts Forest Park near JR Kasama Station. It attracts approximately 500,000 visitors, with a recorded attendance of 488,000 in 2014.