Japan's #1 green tea brand, now in a bottle. ITO EN's Oi Ocha is the undisputed leader in Japanese bottled green tea, brewed from premium whole tea leaves—never from concentrates or powders . Unsweetened and with zero calories, it delivers the pure, authentic taste of freshly brewed green tea with a clean finish. No sugar, no artificial flavors, just the natural goodness of Vitamin C and tea antioxidants in every 500ml bottle . 100% pure, 100% refreshing.