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How to Properly Operate a Coffee Drip Machine There are a variety of ways to make a delicious cup, however, a drip machine is still one of the most popular. These machines use hot water and gravity to extract flavors, oils, and caffeine from coffee beans. The top drip coffee makers have precise temperature control to attain the ideal brewing temperature, which are critical for the extraction of flavor. They also allow you to choose a filter that will enhance or mellow particular characteristics of c