Shidoro-yaki, Hirozaki Shin-sai Kiln Tea cup with box This is an old item, but it is unused. It's a good size for holding a generous amount of tea. Size: Diameter: Approximately 7.5 cm Height: Approximately 9 cm Shidoro-yaki is the most traditional elegant pottery in Shizuoka. It was protected by Tokugawa Ieyasu and was one of the seven kilns loved by the tea master daimyo Kobori Enshu.