Gunma Sake: Mountain Water Brewing on the Jomo Plain

Gunma's sake breweries draw on mountain water flowing down from the Tone and Agatsuma river systems, along with locally grown rice varieties bred for sake production. Production volume is modest compared to Japan's major sake regions, and the industry here tends toward small, independent breweries rather than large-scale producers, several of which have operated under the same family for multiple generations.

Because Gunma's water tends to be relatively soft, many local sakes lean toward a smoother, rounder mouthfeel rather than a sharp, hard-edged dryness, though styles vary brewery to brewery. Some breweries welcome visitors for tastings or direct sales, but hours and reservation policies differ enough that it's worth checking ahead. Local izakaya and sake shops in cities like Maebashi and Takasaki are a more reliable way to sample several labels without brewery-hopping.