Nagai Honke is a small handcraft brewery in the mountainous Tone-Numata region of northern Gunma Prefecture, surrounded by the Tanigawa range and sacred Mount Kashio, producing sake under the Tonenishiki label using soft natural water and locally grown rice including Koshihikari. The brewery holds GI Tone-Numata designation, placing it among the recognized sake producers of this protected regional appellation in Gunma. Hand-making methods passed down through generations shape each batch, with the brewery's Tonenishiki Koshihikari Junmai reflecting the region's cool mountain climate in its structured rice umami and food-compatible depth.
