Cold Brew 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 Cold Brew and Bulletproof Coffee's differentiating factor?In following section we will take a close look at what is Cold Brew and Bulletproof Coffee color, serving style, types and much more. First thing to know is what are the different types of Cold Brew and Bulletproof Coffee. Well, Cold Brew types include Iced Coffee while types of Bulletproof Coffee are Espresso.