Cold water, Coffee and Time. That's all it takes to make delicious Harpoon Cold Brew. But the perfection lies deep in the details of what we make. Harpoon Cold Brew is brewed with cold filtered water over 18 hours to extract only the light and delicate flavours of the coffee, and avoiding the bitterness and acids that come out with a hot extraction. As a result Harpoon Cold Brew is a long and refreshing way to drink coffee. Clean and smooth, with no sugar or anything artificial.