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