Traditionally brewed. Since 1649. From select California grown rice. All natural. Non GMO project verified. nongmoproject.org. Gluten free. www.marukan-usa.com. Certified organic by Oregon Tilth. USDA organic. Marukan has been brewing the world's finest rice vinegar for over 360 years using a traditional slow brewed technique. The result is a rice vinegar that's milder in taste, yet full of flavor. Taste the Marukan difference! Product of USA.