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