At the beginning of the 1980s, the project for 'Yamagata sanga' (ginjoshu produced in Yamagata Prefecture) was launched, and sake yeast, Yamagata yeast and Seisei yeast were developed.
1980年代に入ると県産吟醸酒「山形讃香」のプロジェクトが始まり、めざす酒質にあう酵母として清酒酵母山形酵母、清々酵母を開発した。