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How to Properly Operate a Coffee Drip Machine There are a myriad of ways to create a delicious cup, however, a drip machine is still one of the most sought-after. These machines make use of hot water and gravity to extract oils, flavors and caffeine from coffee beans that have been ground. The best coffee drip makers come with precise temperature controls to achieve the ideal brewing temperature, which is critical for flavor extraction. You can also select filters that enhance or mellow certain characteristic