Toyoshima Shuzo
| Years Active | 1880 – present |
|---|---|
| Region | Chubu |
| Country | Japan |
| Japanese Name | 豊島屋酒造 |
| Prefecture | Nagano |
| Status | Operating |
| Owner | Family (Toyoshima family) |
| Water Source | Underground water from Lake Suwa area |
| Rice Varieties | Miyama Nishiki; Hitogokochi |
| Toji School | Suwa Toji |
| Production Size | Small |
| Key Brands | Kamikaze; Shinano Fuji |
| Famous Brands | Junmai Daiginjo; Junmai Ginjo; Junmai; Honjozo |
| Website | Unknown |
| Coordinates | 36.07, 138.05 |
About Toyoshima Shuzo
Based in Okaya city on the eastern shore of Lake Suwa. Part of the broader Suwa basin brewing tradition. The Suwa region has historically supported many sake brands thanks to excellent water quality and cold mountain climate.