However, it is likely that all-. natural energy drinks may contain as. much caffeine as regular energy drinks, albeit from natural sources. Therefore, natural energy drinks could differentiate. by listing the amount of caffeine on. packaging, if the product has less caffeine.
Description. Oi Ocha is Japan's #1 green tea brand and means Tea, please!. Unsweetened. No calories. With more than 100% RDA of Vitamin C.  1  All natural. 2  Unsweetened.
All of the famous Japanese teas, such as sencha, gyokuro and hÅji-cha, are green teas. âGreen teaâ means tea that has not been fermented (which is a term that actually refers to oxidation). What people in the West call âblack teaâ is actually fermented (oxidized) tea; Oolong tea is semi-fermented tea.