Like all of their other vinegars, first Iio-san makes a sake from the main ingredient and then turns it into vinegar. Same goes for this purple sweet potato vinegar, which the resulting sake looks like a brilliant ruby red beet soup. The finished vinegar itself has beautiful purplish color. On the nose and palate you can taste the earthy potato, but it also has the round fullness of a superb red wine vinegar. This product is really amazing.
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