All tea comes from the "Camellia sinensis" plant, however, where the tea is grown, the climate, soil conditions, altitude, etc, and how the tea is processed, determines the flavor characteristics of the tea. Based on the method of production teas can be divided into three categories - black, oolong, and green.
Black tea is withered, fully oxidized (fermented) and dried. Black teas are available from various estates, countries and regions, with added flavorings and also as specialty blends.