Shimanto Domeki’s Dashi-Infused Rice Vinegar is unique in the way in which large shavings of bonito flakes and rice vinegar sealed in the same bottle, creating an umami-rich, dashi-flavored vinegar. It’s a simple technique but it’s an effective way to extract umami from the bonito flakes, and you’ll also notice a pleasant dashi aroma as you open the bottle. Made by blending two types of bonito flakes (Soda-gatsuo, harvested in the company’s home of Kochi Prefecture, and regular katsuo), it exhibits a robust and wonderful balance of umami. The vinegar used in the product is crafted by a local vinegar brewer with 150 years of history by using traditional and natural production methods without any additives.