Posted on May 12, 2020
This page introduces "Sobokai clay", the raw material for Seto ware, which was introduced in the story about Ofuke ware.
This clay is quite selective and I will explain what kind of clay it is.
There is a legend that "the potter Toshiro (Kato Shirozaemon) found suitable clay for pottery in Seto, Sobokai, and settled in Seto to make pottery from this clay. This clay is a type of clay called Kibushi-nendo, which is characterized by its fine texture, high viscosity, and difficulty in losing its shape. This clay, which contains a lot of iron and turns reddish-black when fired, is thought to have been especially suitable for the production of tea utensils because it enables thin construction and complex deformation by potter’s wheel, and it is also strong when fired.
It is recorded that the Owari clan had a monopoly on Sobokai clay by bringing it into the castle's storehouse. In fact, there were so many tea utensils in Seto ware made of Sobokai clay. In earlier times, pottery tea utensils were so expensive. Samurai said that a castle could be built with a single tea utensil.
Believe it or not, tea ceremony utensils were once an indispensable tool for politics in Japan. If you are interested, please refer to this page for a better understanding.
It is easy to imagine that Ofukai ware was one of the means to support the economy of the Owari clan.
All prices are in JPY