Tea, of the variety called “Black Tea”, “Green Tea”, and “Oolong Tea”, is derived from the same young tender leaves and buds of the plant “Thea sinensis”, a close kin to the plant Camellia. The preference for tea as a refreshing natural beverage dates back to 2737 B.C. when it is said that the Chinese Emperor, Shen Nung , discovered and brewed the world’s first cup of tea.