Dassai Junmai Daiginjou 50 (1.8 L)

In 1990, Hiroshi Sakurai made a decision that restructured an entire brewery: Dassai would produce only Junmai Daiginjo — no futsushu, no honjozo, no seasonal hedging — a single-tier commitment so commercially unusual that most Japanese industry observers considered it reckless. The Dassai 50 is the entry point into that commitment, and it is built on the same uncompromising infrastructure as every expression above it.

The brewery sits in the mountain valley of Shuto-cho, Iwakuni City, Yamaguchi Prefecture — a region classified for its soft, low-mineral 'Seiryu' water, purified further on-site. Soft water produces a lighter, more delicate fermentation character; it is the hydrological reason Dassai's house style runs toward clean fruit and silky texture rather than the umami-dense profiles of harder-water breweries.

100% Yamada Nishiki rice, polished to 50% seimaibuai (half the grain milled away). Rice is washed in 10 kg units in running water, soaked approximately 15 minutes, and koji is applied entirely by hand. Fermentation runs in small individual tanks with temperature carefully controlled throughout the moromi mash. Crucially, Dassai pioneered the commercial use of a centrifuge to separate sake from mash without applied pressure — preserving aromatic compounds that conventional pressing destroys. Bottling follows the patented Hayata method (Patent 2013-008455): filled cold below 5°C, hot-water-shower pasteurized, then rapid-cooled to lock freshness.

The 50 is the only expression in the Dassai range where the polish ratio aligns with the Daiginjo threshold floor — making it the most textural, grain-present entry in a lineup that otherwise pushes relentlessly toward transparency. Consume within 12–18 months of purchase; no vintage dating applies.