This limited, unpasteurised release from Tamagawa shows what the brewery's "3U" approach can do for Iwai rice: it is bottled without pasteurisation or filtration, adjusted to about 14% alcohol, and keeps the natural softness of Iwai while adding a cleaner, brighter edge. The aroma displays ripe fruit, a gentle lactic note, and a hint of cocoa. On the palate, it feels full and creamy, with concentrated rice-driven umami supported by a firm but not aggressive acidity. The flavour settles into a mellow richness rather than sweetness, and the finish is clean while lingering quietly.
Compared with Tamagawa's stronger, year-round versions, this one is noticeably milder in alcohol yet still has the depth expected from the brewery's style. The contrast between Iwai's rounded character and the freshness of a nama genshu makes it easy to appreciate, and the balance holds steady from first sip through to the long aftertaste.
Appearance: clear and lemon-green
Nose: clean, medium+
Aroma: ripe fruits, lactic, cocoa
Sweetness: medium dry
Acidity: medium+
Umami: medium+
Alcohol: medium-
Body: full
Flavour intensity: medium+
Flavour characteristics: mature, ripe fruits, lactic
Texture: creamy
Finish: clean, long
Quality level: very good
Compared with Tamagawa's stronger, year-round versions, this one is noticeably milder in alcohol yet still has the depth expected from the brewery's style. The contrast between Iwai's rounded character and the freshness of a nama genshu makes it easy to appreciate, and the balance holds steady from first sip through to the long aftertaste.
Appearance: clear and lemon-green
Nose: clean, medium+
Aroma: ripe fruits, lactic, cocoa
Sweetness: medium dry
Acidity: medium+
Umami: medium+
Alcohol: medium-
Body: full
Flavour intensity: medium+
Flavour characteristics: mature, ripe fruits, lactic
Texture: creamy
Finish: clean, long
Quality level: very good