Northern Ibaraki brewery near Hitachi city. The Hitachi coastline provides mineral-rich water. Hitachi is better known for the electronics conglomerate but has an older agricultural and brewing tradition.

South Boso Peninsula brewery in the Kamogawa area. Warmer climate compared to northern Chiba but mountain spring water provides good brewing conditions. Small-batch production for local consumption.

Located in the central Boso surfing town of Ichinomiya. Kazusa is the old provincial name for central Chiba. Small traditional brewery primarily serving the local market and nearby resort area.

Southern Chiba brewery near the fishing port of Katsuura. Famous locally for pairing with fresh bonito (katsuo) and other local seafood. Koshigoi brand is well regarded among Chiba sake enthusiasts.

Located in the historic Sawara merchant district (Important Preservation District). Sawara’s Edo-period canal district is a popular tourist destination. Benefits from the same Tone River water that supports Chiba’s mirin and soy sauce traditions.

One of Saitama’s most acclaimed breweries. Uses relatively hard water unusual for the region giving sake a fuller body. Ogose area in western Saitama benefits from Chichibu mountain water. Multiple gold medal winner at Annual Japan Sake Awards.

Located near the Kujukuri coast in eastern Chiba. The coastal area provides mineral-rich groundwater filtered through ancient sand deposits. Traditional Chiba brewing with seafood-pairing focus.

Small historic brewery in Nagareyama city. Nagareyama was historically known for mirin production as well as sake. Tone River provides excellent soft brewing water for this northern Chiba location.

Located in Choshi at the mouth of the Tone River. Choshi is better known for soy sauce (Yamasa and Higeta) but has a small sake tradition. Maritime climate influences the brewing character.

One of the oldest breweries on the Boso Peninsula in southern Chiba. Mild maritime climate of the Awa coast influences flavor development. Iwanoido brand references a legendary local well.