Iyo Kagiya Muroka Junmai Daiginjo Green (720 ml)

The Shuto family of Saijo City has held the keys to Ehime's rice stores since the Edo period — the brewery name Kagiya literally means 'Key-House' — and that custodial identity shapes every production decision at Seiryo Shuzo. Founded in 1877, the five-person kura brews exclusively during Ehime's mild winters, drawing on subterranean spring water fed by Mt. Ishizuchi (1,982 m), Shikoku's highest peak, whose snowmelt percolates through the Dōzen Plain aquifer into a characteristically soft water source that supports the delicate, low-mineral fermentation profile demanded by ginjo-class brewing.

The rice is Matsuyama Mii, an Ehime-native large-grained variety polished to 50% seimaibuai (Junmai Daiginjo threshold), fermented at low temperature with Yeast No. 9 (Kumamoto-kei) — a strain selected for floral aromatic lift rather than neutral efficiency. What distinguishes the Green label is its muroka (no activated-charcoal filtration) and namagenshu status: unpasteurised, undiluted, bottled at approximately 17–17.5% ABV, preserving the raw texture and unmediated rice character that charcoal and dilution would otherwise strip away.

Where most daiginjo producers chase aromatic purity through heavy filtration, Iyo Kagiya's muroka track is explicitly conceived as a shokuchu-shu — a sake engineered to accompany food, not to perform in isolation. Requires refrigerated storage; drink soon after purchase for peak freshness.