Like their Pure Rice Vinegar, this vinegar is made with ingredients grown without pesticides and Iio Jozo’s house-made sake. However, to make a liter of this premium vinegar they use 320 grams of rice. This recipe was developed over a 20 year period by the fifth generation Iio-san to have a rounder, fuller taste and has minimized the acidic nose of regular vinegar. About the producer: Iio Jozo is a 123 year old vinegar company located on the Sea of Japan near the town of Miyazu. By controlling the process from start to finish and sticking to traditional production methods, Iio-san produces what is arguably the highest quality rice vinegar in Japan.