Blue glazed ceramics prized by the nobility since the early Heian period (794-1185). The word “aoshi” is found in the Tale of Genji (Tale of Genji), Uji Jikkei Monogatari (Tale of Uji), and other works. It is thought to have originally come from China, and is believed to have been produced in the Yuezhu kiln.
In Japan, it is written in the Nihon Kouki that from the Kounin period (810-24), in Owari Province (Aichi Prefecture), they began to produce japanese porcelain ware. According to the “Eke Yoroshiku,” this was called the “Goto Ceremony” (to harden the teeth, people ate rice cakes, wild boar, deer, sweetfish, radish, melon, etc. during the three days of the New Year. Teeth are the root of age, and the desire for a long life). Today, there are no confirmed pieces of celadon from the Yuezhu kilns or Owari celadon, and it is not clear what kind of celadon they were, but we can imagine that they were not porcelain celadon like the later Kinuta and Tenryuji Te wares, but rather “suemono” with a childish pale blue glaze.
