Cask sake, brewing in wooden barrel, brewing by the yeast which was separated for the first time in Japan, the development of kijoshu followed by ancient documents "Engishiki" (codes and procedures on national rites and prayers), and so on.
樽酒、木桶造り、日本で最初に分離された酵母による醸造、古文書『延喜式』による貴醸酒の開発など。