A walker's guide to the pottery studios
The History of Mikawachi Ware

Mikawachi Begins - the late 16th century
According to one theory, the history of Mikawachi Ware began with Toyotomi Hideyoshi's invasions of Korea at the end of the 16th century (the Imjin War, 1592-1597). Returning to Japan from this campaign, the ruler of the Hirado Domain, Matsura Shigenobu, brought Korean potter Koseki back with him, and a kiln was founded in Nakano (today's Hirado City, Nagasaki prefecture). This was one element in the birth of Mikawachi Ware.
Another factor was the influx of potters from Karatsu. Karatsu Ware, which sprung up in the same period in the north of Saga prefecture, developed rapidly with the arrival of potters from the Korean peninsula. Hata, the local overlord at the time, fell out of favor with Toyotomi Hideyoshi (Japan's supreme commander) and had his land confiscated, so Karatsu potters were dispersed to other areas throughout Kyūshū. One destination where they settled was today's Mikawachi, Sasebo City (Kihara and Enaga districts).
From the first white vessels to daimyō-sponsored kiln
Mikawachi originally produced earthenware and other porous-clay work but switched to making white porcelain around 1640. The trigger for this occurred when Koseki's son Imamura Sannojō discovered porcelain clay on Hario Island in 1633 (Ajiro tōseki). In 1637 the Hirado Domain appointed Sannojō as Master Potter - both the director and administrator of the pottery - and established Mikawachi as an official daimyō-sponsored kiln.
In 1650 the Hirado Domain moved all the Nakano potters to Mikawachi and its status as a daimyō-sponsored kiln was firmly established. The resulting patronage of the domain enabled Mikawachi to use high quality raw materials and advanced techniques, with the Eastern Kiln Studio and Western Kiln Studio playing the major roles.
From 1662 Sannojō's son Imamura Yajibē (Joen) began to use Amakusa tōseki as an ingredient in the clay, and porcelain manufacture was firmly established.
It was also around this time that decorative techniques like openwork and relief sculpting emerged.
A high reputation for foreign exports
In contrast with private kilns, the generous support of the Hirado clan allowed Mikawachi to disregard profit margins and concentrate on honing elaborate workmanship. Its products were noted for their outstanding technical quality and until around 1789-1800 Mikawachi Ware was only produced for gifts, with sales strictly prohibited and production methods kept a closely guarded secret. Hiraga Gennai states in his book A Compendium of Pottery Techniques (Tōki Kufūsho, 1771) that if Mikawachi Ware had been traded in the same way as Imari and Karatsu Ware, it would surely have been in great demand from the Chinese and the Dutch. Export began around 1804. Initial export items consisted of coffee cups, unfamiliar to the Japanese. Craftsmen at Mikawachi - Ikeda Anjirō, Takahashi Heisuke, Nakazato Jūtarō and Yoshikawa Shōsaku - developed coffee cups and wine cups in pure white ultra-thin porcelain known as ‘eggshell’. These were exported together with ornaments in animal or human form called hineri zaiku (literally ‘twisted craftwork’) and openwork pieces. The wealthy Arita merchant, Hisatomi Yojibē, noticed the technical prowess and high international reputation of Mikawachi Ware and began to order eggshell porcelain teacups in 1841, adding overglaze polychrome-enamel decoration at Arita and exporting them, signed "made by Zōshuntei Sanpo". These continued to be exported to America, and to Holland and other European countries, through the late 19th and early 20th centuries right up to around 1950. In Japan too, prior to the period of rapid economic growth, this porcelain was used regularly in locations including the Japanese Imperial Court, albeit in small quantities, and continued to be highly regarded by connoisseurs for its fine, delicate workmanship.
Distant view of Hario Island
Shards with egaratsu (iron painted) designs, early Edo period (17th century), from Yoshi-no-motogama Kiln Site (Kihara), Sasebo City Collection
Small plate with underglaze blue chrysanthemum design, Edo period (mid-17th century), Sasebo City Collection

Plate with underglaze blue motif of bamboo and sparrows, Edo period (end of 17th - beginning of 18th century), Sasebo City Collection
Sake bottle with underglaze blue design of chrysanthemum and autumn grasses, Edo period (first half of the 18th century), Sasebo City Collection
Elephant ornament in white porcelain, Edo period (19th century), Sasebo City Collection
Water jar with underglaze blue design of Chinese children, Edo period (first half of the 18th century), Sasebo City Collection