About Sometsuke
染付とは、素焼きした白い色の器に、コバルトを含んだ呉須（ごす）という絵の具で模様を描き、その上に透明な柚薬をかけて本焼きする技法です
| Sometsuke (underglaze blue) |
Sometsuke is a process where patterns are drawn on white-glazed ceramic using a pigment called gosu containing cobalt, then coated with a transparent glaze and fired. It has been produced in China since the Yuan Dynasty (around the 12th century).
Before firing, gosu appears black or brown, but upon firing, it develops a beautiful blue color. The delicate shading created by brushwork and variations in color intensity is a distinctive feature.
| Making Process of Sometsuke |
＜Source: "What is Traditional Kōgei?" Edited by Japan Kōgei Association East Japan Branch / Published by Unsodo, P.13>
