Kyokai No. 7 yeast

Kyokai No. 7 yeast (7号酵母) is a type of yeast used in sake brewing, also known as Kyokai No. 7 (Masumi yeast). Because of its excellent fermentation ability and the stability of the sake quality it produces, it is very popular in sake brewing. It is particularly known to have originated at Miyasaka Jozo in Nagano Prefecture, and it is also used in the brewery's sake, Masumi. Kyokai No. 7 yeast is characterized by bringing out a fruity aroma and a clear taste, and it pairs easily with a wide variety of foods. As a result, its use has spread to many sake breweries, and it has become an important element of sake making.