|●Kannyuu: the cracked nature of the surface glaze.
●Gohon: teacups made around Pusan from the Momoyama era to the Edo era (1573-1867) using the "Gohonte" technique Japan taught to Korea. Reddish spots often appear on these teacups as a result of the composition of the earth, and these marks are also called "Gohon."
●Koudai: the round ring at the base of a teacup. They can be created separately and attached ("attached koudai") or worked from the body of the teacup with a spatula ("pared koudai"). A koudai with a nick taken out of it is called a "cut koudai" or "broken koudai." In Hagi Yaki, "broken koudai" are common and form one of their notable features.
●Cut Koudai: there are a variety of theories as to the purpose of the cut-stand. It is speculated that, regular sale of ceramics made at the Mouri kiln being prohibited, the bases were intentionally cut so the piece could be sold as a reject. Another idea is the, following the tradition from the Korean Joseon era, rope was threaded through the cuts in the bases to make the cups easier to carry in bulk for sale at market.
●Youhen: the change in color of the glaze where it has been touched by fire in the kiln.
●Nobori Kiln: a kiln containing 3-20 firing chambers, built on a sloping base. Because kindling is burnt from the bottom part, it can be warmed up. When firing, the temperature inside the kiln is a high 1000-1500 degrees Celsius. In Hagi, red pine stripped of its bark and dried for over six months is used for fuel.
●Daidou Earth: the most well-known earth used for Hagi Yaki. It contains the plasticity of sand and pebbles, is resistant to heat, and a blue-white color.
●Mitake Earth: taken from the east of Hagi, it is a rough material yellow-white in color. It is not sticky, but it is very resistant to heat. The main materials used for Hagi Yaki are Daidou and Mitake earths, and the value of the piece varies depending on their ratio.
●A black, volcanic earth with low heat resistance, taken from Mishima Island near Hagi. It is mixed in small quantities with Daidou and Mitake earths.