Kokuryu Sake: The Fukui Brewery That Helped Pioneer Premium Daiginjo

In 1975, a brewery in Fukui Prefecture released a daiginjo at a time when such highly refined sake was still closely tied to technical competitions rather than ordinary retail. Daiginjo is a highly polished, slow-fermented style. The bottle was Kokuryu Daiginjo Ryu, and the brewery describes it as a nationwide pioneer in selling such sake commercially. That decision sits at the center of Kokuryu’s (黒龍) story. The brewery, founded in 1804, did not invent ginjo brewing. Rather, it helped turn a competition-oriented style into a commercial premium product, and then kept refining it. This guide covers the brewery’s history, the 1975 launch, its approach to water, rice, and aging, the main bottles, and what to expect in the glass. Quick Facts: Kokuryu SakeJapanese name黒龍 (Kokuryu, pronounced koh-koo-ryoo), “black dragon”BreweryKokuryu Shuzo (黒龍酒造), often called Kokuryu Sake Brewery in EnglishLocationMatsuoka, Eiheiji Town, Fukui Prefecture, on the Sea of Japan side of central HonshuFounded1804, according to the brewery; 220th anniversary in 2024Known forDaiginjo Ryu (1975), low-temperature aging, premium daiginjoSister brandKuzuryu (九頭龍), a separate brand from the same breweryWaterGroun...