Oi Ocha is Japan's No. 1 green tea brand and it means "Tea, please!". Made by Ito En, Japan's foremost tea purveyor, our unsweetened green tea is brewed from prime, first flush tea leaves harvested in Spring. Using decades of green tea expertise, our classic Oi Ocha unsweetened green tea brings you the most refreshing and authentic green tea taste in the iconic green bottle.