The entire body is thickly covered in a yellowish glaze known as biwa-iro (loquat color) that has dripped in parts around the rim. The glaze is full of fine crackle, and the pottery body is exposed in places at the ring foot. The area around the ring foot also has cracks and traces of glaze shrinkage, known to the Japanese as kairagi. This is a classic Ido ware tea bowl.
It is believed that the Ido ware tea bowls were produced in the Joseon period (16th century) on the south of the Korean peninsula, in present day South Gyeongsang province. They were originally wares for everyday use made by an ordinary private kiln, but when exported to Japan were used as tea bowls. Following the Momoyama period they became much prized by tea drinkers in Japan, and were considered to be of the highest quality at that time.