Field Coffee MasterMade in Japan as part of the Field Coffee Series, the Field Coffee Master is our best solution for barista style, hand brew coffee at home or camp. Depending on your taste, you can brew coffee in two styles; percolator or paper drip. The dripper is a single hole style with a perfect extraction speed designed to be used separately to the main body. When brewing with a percolator, the clever dripper is placed back into the main body with a paper filter