This is the secret ingredient in our core Tamagawa honjozo, by far the most popular Tamagawa product locally.
By blending with this spontaneous ermentation yamahai, we give our baseline product an extra umami turbocharge. This seasonal limited edition represents the only chance to try the unpasteurized version, and its combination of deep flavour, drinkability and cost performance makes it the favourite of many a Tamagawa fan.