Long Black 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 Long Black and Decaf Coffee's differentiating factor?In following section we will take a close look at what is Long Black and Decaf Coffee color, serving style, types and much more. First thing to know is what are the different types of Long Black and Decaf Coffee. Well, Long Black types include Espresso, Ristretto while types of Decaf Coffee are All types of coffee.