Ooiwa Shuzo Honten, founded in the Meiji era, brews Iwaizumi using pure spring water from Okudaisen at approximately 800 meters elevation in Tottori Prefecture. Set at the foot of Mount Daisen, the brewery has drawn on the mountain's pristine snowmelt for over 140 years of sake production. The brand reflects Tottori's regional tradition of prioritizing junmaishu and clean, water-forward styles.
