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