Masumi Karakuchi Gold (300 ml)

In 1946, Masumi's brewers isolated a yeast strain from their Suwa fermentation tanks that now drives over 60% of Japan's sake production — Kyokai Yeast No. 7. That same house yeast anchors every bottle in the range, including this entry-level karakuchi. Brewed at the original 1662 kura in Suwa's Shimizu-machi district, the brewery draws snowmelt water from the Kirigamine Highlands of the Yatsugatake Range — cold, mineral-rich alpine water that supports a slow, clean fermentation and contributes to the dry, precise finish that defines this style. The yamahai yeast-starter method is applied here as it is across the entire Masumi range: natural lactic-acid bacteria are cultivated in the shubo over approximately two weeks without commercially added lactic acid, building a fermentation base of greater complexity and higher natural acidity than the sokujo norm. Primary rice is Miyama Nishiki, a Nagano-grown variety suited to the cold mountain climate. What sets Masumi apart is the refusal to reserve yamahai for premium tiers — this labour-intensive method is deployed at every level of production, a commitment almost unmatched among high-volume breweries. Dry, umami-structured, and built for the table rather than standalone sipping, the 300 ml format makes it an accessible daily-pour expression of a 360-year brewing lineage.