You might think, “Hey, it heats up the water inside, so that must kill the bacteria. Plus, the only thing I make in it is coffee, so I don’t care if the thing permanently tastes like coffee.” The very fact that your coffee pot heats up makes it a wonderful breeding ground for mold. To clean your pot, empty your coffee machine entirely. Fill the water reservoir with six cups of water and three cups of white vinegar. Turn on the machine and run it on a “water only” cycle for two cycles.