What kimoto means
Fermentation needs lactic acid early on to keep the wrong microbes out. Nearly every modern brewery adds it from a bottle, which takes about two weeks and is called sokujō. Kimoto is the old way. The mash gets rammed with poles, and the lactic acid arrives on its own from bacteria already living in the building. It takes about four weeks. Yamahai is the middle path, natural lactic acid without the pole ramming. The brewery's own description is that kimoto takes twice as long and produces thick bodied sake with great depth.
The brewery
Fifth generation family, brewing at Yachiho in Nagano since 1858, with the son now serving as tōji. They contract farm their rice from neighbors and do all their own polishing in house, which very few breweries this size do. The water comes from two wells into the Chikuma River aquifer, at 50 and 80 meters. Skurnik has imported it since 1998.
What the room said
Fifth of six, and this is the score worth arguing about. Kimoto sake is rustic on purpose. Skurnik's note is black walnuts and cacao nibs, which is not what most people expect a glass of sake to taste like, and a blind pour punishes anything unfamiliar. The serving instruction is the part to take seriously: cold it reads lean and acidic, but warmed past 100°F it turns sweet and chocolatey. We poured it cold. That may be the whole story of its fifth place.
Both. Cold it is lean and acidic. Warmed past 100°F the sweetness and the chocolate come out.
Specs we could not confirm against a brewery or an importer are left off this page rather than guessed at.
The ones we hear most
What is Kurosawa Junmai Kimoto?
A junmai made with a kimoto starter by Kurosawa Sake Brewery in Yachiho, Nagano, milled to 65 percent, 15 percent alcohol, sake meter value +3 and acidity 1.7.
What does kimoto mean?
Kimoto is the old way of starting fermentation. It takes about four weeks instead of two and lets wild lactic acid bacteria build the acidity, rather than adding lactic acid from a bottle.
How should Kurosawa Junmai Kimoto be served?
Both ways. Chilled it is lean and acidic. Warmed past 100 degrees Fahrenheit the sweetness and the chocolate notes come out.
What did Kasumi Club score Kurosawa Junmai Kimoto?
3.5 out of 5, fifth of six, in a blind tasting in Washington, D.C. on June 12, 2026. It was poured cold, which the club considers a likely reason for the score.
Send us a bottle and about twenty people will tell you the truth.
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