Vienna Coffee and Doppio are produced all around the globe. And they change according to region in where they are cultivated. So, the question arises what is Vienna Coffee and Doppio's differentiating factor?In following section we will take a close look at what is Vienna Coffee and Doppio color, serving style, types and much more. First thing to know is what are the different types of Vienna Coffee and Doppio. Well, Vienna Coffee types include Kleiner Brauner, Kleiner Schwarzer, Großer Schwarzer, Kapuziner while types of Doppio are Espresso.