Rei is produced by Saijo Co., a sake brewery located in Hiroshima Prefecture, one of Japan's three historic sake-brewing regions alongside Nada and Fushimi. Hiroshima sake earned the nickname 'female sake' for its soft, delicate character, a quality shaped by the prefecture's traditionally sweet, soft spring water and the techniques of the Hiroshima-style three-stage brewing method. Sake brewing in the Saijo area dates to around 1675, and the region's underground water filtered by Mount Ryuo remains the foundation of its distinct brewing tradition.
