Black tea is made from the leaves of a bush called Camellia sinensis. A process called oxidation turns the leaves from green to a dark brownish-black colour. Oxidation means the leaves are exposed to moist, oxygen-rich air. Tea manufacturers can control the amount of oxidation. Black tea is a fully oxidized tea. Green tea comes from the same plant, but is not oxidized. Product origin : Sri Lanka / ceylon Minimum Order Size and Packgaing details : Depends on the requirement