Dassai 39 Centrifuge (720 ml)

When Hiroshi Sakurai launched the Dassai brand in 1990, he made a commitment no major Japanese brewery had attempted at commercial scale: exclusively Junmai Daiginjo across every expression, no blended grades, no added distilled alcohol — a single-tier obsession that restructured how the global market understood premium sake. The 39 sits at the heart of that range. Brewed in the mountain valley of Shuto-cho, Iwakuni City, Yamaguchi Prefecture, the facility draws on Iwakuni's regionally classified Seiryu soft water, purified further on-site — low mineral load that keeps fermentation clean and lets Yamada Nishiki's aromatic potential express without interference. 100% Yamada Nishiki rice is polished to a 39% seimaibuai — 61% of each grain removed — before being washed in 10 kg batches in running water and soaked to precise absorption targets determined by parallel brewing teams running simultaneous fermentation experiments. Koji is applied entirely by hand; moromi temperature is managed continuously to steer yeast activity and aroma development. The defining technical transgression: Dassai was the first sake brewery in Japan to deploy a centrifuge for commercial pressing (c. 2000), separating sake from mash without mechanical pressure, preserving volatile aromatic compounds that conventional fune or yabuta pressing would shear away. Bottling follows the patented Hayata low-temperature pasteurization method (Patent 2013-008455) — filled cold, hot-water-shower pasteurized, immediately rapid-cooled — locking in freshness at the moment of sealing. The result is a Junmai Daiginjo whose textural density at 39% polish sits noticeably above the 45 without approaching the austere precision of the 23.