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.
Genmaicha is a combination of Sencha tea leaves mixed with puffed brown rice, which adds a delicious popcorn and roasted grain flavor. And it contains less caffeine. When brewed, this tea has a golden yellow green color. Due to the rice, Genmaicha has the rich and hearty flavor of roasted grains or coffee.