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How to Properly Operate a Coffee Drip Machine There are many ways to make a delicious cup, but a drip machine is still one of the most popular. These machines make use of hot water and gravity to extract flavors, oils, and caffeine from ground coffee beans. The best coffee drip makers have precise temperature controls to achieve the ideal brewing temperature that is essential for flavor extraction. You can also select filters that enhance or mellow certain characteristics of the coffee. Temperature Control A