Fermented Tea and Sencha Tea are produced all around the globe. And they change according to region in where they are cultivated. So, the question arises what is Fermented Tea and Sencha Tea's differentiating factor?In following section we will take a close look at what is Fermented Tea and Sencha Tea color, serving style, types and much more. First thing to know is what are the different types of Fermented Tea and Sencha Tea. Well, Fermented Tea types include Oolong, Black, Pu-erh while types of Sencha Tea are Green.