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