
History
In 1944, as World War II intensified, founder Sadatsuta Yamada established the first factory for producing tartaric acid under orders from Japan’s Ministry of Munitions. Tartaric acid was an essential material used in military equipment.
The factory processed Rochelle salt, a crystalline tartaric-acid compound obtained as a by-product of winemaking.
After the war, the operation became “Hojo Grape Wine Brewery,” the predecessor of today’s Hojo Wine Brewery.












