A tea caddy with a long neck and spherical body. It is found in Karamono and Koseido ware. They vary in shape, but some have small shoulders.
There are also tea caddies without shoulders and with round bodies. There is also a tea caddy Kokusan with a high mouth and steamer and a low body. The Tenkamaru-ichiru jar from the Yabuuchi family in Kyoto is particularly famous. Other famous examples include Karamono (Chinese-style) Shino, Kinoshita, Kanamori, Tsuchida, Terasawa, Futamura, Ishikawa, Aoyama, Tori, Karamaru-ichiru jar Rikyu, Ryukoin, and Aisaka in Koseto. It is said that the rounded part of the citron is the most expensive part of any of these types of pottery, and that this shape is the most expensive of them all. (Chayairi no Yiyaku, Chakki Bengokushu, Manpo-Zensho, Chado Meimono Kou, Chadoyo Meimono Kou, etc.)