Nov 14, With a ratio, for every 1 gram of coffee, use 17 grams of water. soluble flavors from coffee grounds in water—with a complementary strength. better cups of coffee, and now that you're ready to make excellent coffee. Oct 6, A brew ratio is simply a guide to help you figure out how much water and coffee you So for an oz cup, you're looking at ml. Jan 18, A cup is defined as 6 ounces of water before brewing. . Just to check how much a tablespoon of coffee grounds weighs, I pulled out my.