Asahi yakin has been constantly sticking to the Uji pottery for generations. Until the Meiji era, we have taken soil from Asahi Mountain, and the name of the kiln of Asahiyaki comes from this. Currently, we are taking soil from the Shirakawa and Oriyama mountains where tea gardens on the opposite bank of Asahiyama spread. This soil, which can also be said to be the life of Asahi-yaki, is collected from the clay layer formed by volumetric rapid flow of Uji River in the ancient times. The mined soil is used for aging for 50 years or longer before use. Currently, the soil used for the pottery is what the ancestors excavated, and the soil dug up now weathers to use for the grandchildren. This Uji pottery has a soft expression and is water absorptive, it has low thermal conductivity and therefore it is hard to get hot. This is the reason that compatibility is good as soil that makes tea "Utsuwa". In addition, it is this clay that changes as much as you use. In the world of "tea ceremony", it is said that "Nare comes", it is said that completion of about 80% at the baked stage and completion of "Utsuka" by using the other 20%.

Asahi-yaki pottery can be divided into three types due to the difference in baking.

○鹿背 / Kase

Featuring a complex gradation of light yellow and gray character.
A spot pattern like a deer's back is one of its features.

○燔師 / Hanshi

It is a warm hearted orange (like meat) soya like the morning sun.
It is soil that changes much more.

○紅鹿背 / Benikase

The more iron content, the more reddish color it develops than the deer soil.

The above things hang clear glaze, we value the natural taste. It creates a beautiful color at a place of cold temperature in the kiln. In Asahi-yaki we also produce "Utsuwa" glaze formulated with natural ash glaze. It has been grilling this "gray glaze" "Utsuka" for a long time in a place where it gets hot in the kiln. The ash glaze used by the fee also changes a little.

Currently, the main ash glaze used,

○松灰釉 / Kaiyu

It is characterized by a greenish coloration due to iron of pine. All firewood used in the climbing kiln is red pine, but we use that ash as a glaze.

○月白釉 / Geppakuyu

Those that had a purplish stain due to copper coloration on the blue white of the moon white glaze were called "kiln kiln," brother Hiroshi Fiftishi 's brother, Hiroshi was keenly studying "kiln". Because Hiroshi passed away at the young age of 35 years old, Fujisa of the 14th and 15th centurions continued his research. The current 16th Fusae is studying the facial expression which made three clay (soil, white clay, moon white) by sending clay to the soil of the white glaze base this month.

Although it is also in "the history of Asahiyaki", in the late Edo period, Yashioro Eiyu of Asahi Yaki completes "Utsuwa" of Sencha culture. In the early days there was no technology to firing porcelain in Japan, and the technology of porcelain born in China was taken in Asahi from around Yatsushiro. The whiteness of the porcelain base material shows the color of tea beautifully. In addition, the more white the glaze is, the more beautifully the color will develop. Asahi-yaki has studied the vividness of the coloring of porcelain "Utsuka" in the formulation of its own glaze.

Glazes for porcelain soil

○辰砂 / Shinsya

Glaze using copper. It features red color like deep blood.

○青磁 / Seiji

Light blue with a sense of transparency.

○黄磁 / Ouji

Elegant yellow.

○呉須 / Gosu

Powerful violet.

○青緑 / Seiryoku

Deep blue-green color.

○鮮緑 / Senryoku

Vivid green.

The workshop which makes pottery using soil of both clay and porcelain is a very rare kiln. This is different from the nature of the soil and the culture we have been walking with in this pottery and porcelain. The reason why Asahiyaki began to use both is because it is a pot of Uji who has walked with Uji tea together with "Utsuwa" of different tea culture "Ueno" and "Sencha" in the area of ​​Uji . It is because we made use of the characteristic characteristics of each and responded to the requests of tea men and tea men of that era.