Log in to view฿฿
Junmai Daiginjo.
Product information compiled from producer, importer and reference sources.
39% seimaibuai Junmai Daiginjo from Iwakuni's soft mountain water — centrifuge-pressed, Hayata-pasteurized, 100% Yamada Nishiki.
When Hiroshi Sakurai launched the Dassai brand in 1990, he made a commitment considered extraordinary even within Japan: every expression in the range would be Junmai Daiginjo — no lower grades, no added alcohol, no compromise. The 39 sits at the heart of that
commitment, with 61% of each Yamada Nishiki grain milled away, leaving only the starchy core that ferments into the house's signature silky, fruit-driven profile.
The brewery occupies a mountain valley in Shuto-cho, Iwakuni City, Yamaguchi Prefecture, where the regional water is classified Seiryu — very soft, clear mountain water purified further on-site. Soft water produces a gentler, more delicate fermentation, amplifying the aromatic lift that Yamada Nishiki, the undisputed premium sake rice, is bred to deliver.
Production is technically meticulous: rice is washed in 10 kg batches in running water and soaked approximately 15 minutes; koji is applied entirely by hand; fermentation runs in small individual tanks with temperature carefully controlled through moromi. Two
parallel brewing teams vary water absorption rates and fermentation temperatures batch-to-batch, comparing results — a data-driven artisan model that replaces the traditional seasonal toji system with permanent year-round staff.
The special feature: Dassai was the first sake brewery in Japan to deploy a centrifuge commercially, separating sake from mash without pressure to preserve maximum aromatic integrity. Bottling follows the patented Hayata method — filled cold (<5°C), hot-water-shower pasteurized, then immediately rapid-cooled — locking in freshness that conventional hi-ire cannot match.
Drink within the near term for peak aromatic expression.
Sommelier’s pick: Steamed Dungeness crab with yuzu kosho butter · Sashimi of flounder (hirame) with sudachi · Burrata with white peach and shiso oil
Loading notes…
Tasted this?
Ask us on LINE.
Ask about this item