Black tea is a type of fermented tea,originating from green tea after it is mixed, kneaded, fermented, dried, and otherwise processed.The fermented black tea gives a stronger and thicker flavor.
Oolong tea is a semi-fermented tea. It is mellow as black tea but bitter and stronger than ordinary black tea while fresh as green tea but without the bitterness of ordinary green tea. It keeps strong and long-lasting flavor even after drinking.
White tea is slightly fermented and needs no rolling.Its features are: coating with white fuzz all around and with shining silver glosses ,tea soup is slightly yellow and mellow.