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