Doppio and Bicerin Coffee 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 Bicerin Coffee's differentiating factor?In following section we will take a close look at what is Doppio and Bicerin Coffee color, serving style, types and much more. First thing to know is what are the different types of Doppio and Bicerin Coffee. Well, Doppio types include Espresso while types of Bicerin Coffee are Espresso.