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