Kirizumi Brewery in Annaka, Gunma, brewed a saison using white koji with the cooperation of Tsuchida Sake Brewery in Kawaba Village, Gunma.

What sets this effort apart is that it brings the concept of koji, best known from sake brewing, into the context of craft beer. White koji is known as an ingredient that can give beer a distinctive character depending on how fermentation is designed, and it will be interesting to see how it overlaps with the aroma from saison yeast and the style's dry finish.

Kirizumi Brewery is a brewery based in Annaka, Gunma. Located near the Yokokawa area, it has been increasing its presence by promoting craft beers tied to local memories and landscapes. This batch can be seen as an experiment that combines that sense of place with the fermentation expertise of Tsuchida Sake Brewery in Kawaba Village.

At present, the only publicly available information is that a saison using white koji has been brewed, but for beer fans, the key question is how the koji and beer yeast will be combined, and what kind of flavor the beer will ultimately deliver. More details on the finished product and release information are eagerly awaited.