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