Suehiro Shoyu has been brewing usukuchi, the light-colored soy sauce used for ponzu, since 1879 in Tatsuno City. They blend four different Japanese citrus for their ponzu sauce: Yuzu for aroma, Sudachi for acidity, Daidai for sweetness & Yukou for mildness. Great with raw fish, vegetables, and noodles, it’s also great blended with mayonnaise.