Four main types of tea are produced based on how tea  are processed2: Green tea (non-fermented)Black tea (fermented)Oolong tea (partly fermented)White tea (least processing) As per the provision of the Tea Act, 1953, tea means the plant Camellia Sinensis (L) O. Kuntze and all varieties of the product known commercially as tea made from the leaves of this plant. All four types of teas – i.e. green tea, black tea, oolong tea and white tea – are made from the same tea plant, Camellia Sinensis (L) O. Kuntze. How the tea ends up depends on how it is processed2 after being picked.