Nishibori Shuzo has operated in southern Oyama City, Tochigi Prefecture since 1872, and its flagship Mongaifushutsu series — whose name translates as not to leave the gate — was designed specifically for local consumption, with over 90% of sales remaining within Tochigi Prefecture. The Nishibori series takes a different approach, maximizing the individual character of sake rice varieties from across Japan with an elevated koji ratio of around 25%, reflecting the sixth-generation owner's philosophy of uninhibited sake brewing.
