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How to Properly Operate a Coffee Drip Machine While there are many ways to make a great cup of coffee, a drip machine is one of the most well-known choices. These machines use hot water and gravity to extract oils, flavors, and caffeine from ground coffee beans. The top drip makers for coffee have precise temperature controls to reach the optimal brewing temperature which is crucial for flavor extraction. They also allow you to choose a filter that will enhance or diminish particular charac