Purists consider only green tea, black tea, white tea, oolong tea, and pu-erh tea the real thing. They are all derived from the Camellia Sinensis plant, a shrub native to China and India, and contain unique antioxidants called flavonoids.
Green Tea is a “true tea” in that it stems from the tea plant Camellia Sinensis. And their leaves are not fermented which produces a more delicate flavor than black tea
Black tea is the most common variety, and accounts for over 70 percent of global consumption. It contains the most caffeine yet less than coffee or sodas.
White Tea is the “premium tea” of the world and the rarest of teas. The leaves are picked when they are very young (unopened buds) which produces a higher concentration of antioxidants. White teas are known for their subtle and sweet flavors. It’s also believed to have the least amount of caffeine per cup.
Oolong Tea is similar to black tea and is primarily grown and processed in China and Taiwan. These teas have a caffeine content between that of green teas and black teas. Due to its shorter fermentation period it offers a richer taste, floral bouquets and sometimes you’ll experience fruity flavors.