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