Asahara Brewery, founded in 1882 in Ogose, Saitama Prefecture, has been family-run through five generations and produces a wide range of beverages from sake to liqueurs and craft beer. Biwanosasanami is the brewery's representative sake brand, offered in both modern and retro label designs while sharing the same recipe. The sake is described as mineral and lively on the palate with an elegant nose of exotic fruit, reflecting the brewery's approach to balancing freshness with depth.