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How to Properly Operate a Coffee Drip Machine Although there are a variety of ways to brew a delicious coffee, a drip machine remains one of the most well-known choices. These machines depend on gravity and hot water to extract flavors, oils and caffeine from beans that have been ground. The best coffee drip makers come with precise temperature controls to ensure that you get the right temperature for brewing which is crucial for flavor extraction. They also let you select a filter type that w