It was in the 1980s, when several years passed since the patient studies such as the developments of rice for sake brewing and seishu yeasts and the improvement of junmaishu (sake made without added alcohol or sugar) in order to escape from the long-term slump.
ときに1980年代、すでに日本酒は長い低迷からの脱却を求めて、酒米、清酒酵母の開発や、純米酒の改良など、地道な研究を始めて数年が経っていた。