There are many kinds of green tea produced in Japan. Japanese teas are generally classified according to their type of cultivation, processing method and regional origin.

The fermentation of leaves involve the work of oxidation enzymes in the fresh leaves and it differs from the fermentation that occurs. Green Tea, Oolong Tea and Black Tea are all made from the same tea plant, and they are different only in the way it is produced. Green tea is the main type of tea that is produced and consumed in Japan.