Doppio and Green Tea are produced all around the globe. And they change according to region in where they are cultivated. So, the question arises what is Doppio and Green Tea's differentiating factor?In following section we will take a close look at what is Doppio and Green Tea color, serving style, types and much more. First thing to know is what are the different types of Doppio and Green Tea. Well, Doppio types include Espresso while types of Green Tea are Chinese Green Tea, Pan Fried Longjing, Bi Luo Chun, Jasmine Tea, Japanese green tea, Steamed Sencha, Gyokuro, Kabusecha.