From Barbara Whiting, former About.com Guide
Clean your coffee maker every 2-3 months to keep it brewing smoothly.
Difficulty: Easy
Time Required: 60 minutes
Remove and dispose of used coffee filter from filter basket.
Add vinegar to the water resevoir until 1/4 full. Fill with water until full.
Run the coffee maker.
Turn off the coffee maker; let cool for 10 minutes.
Run the vinegar and water mixture through the coffee maker again. Let cool 10 minutes.
Run plain water through the coffee maker; let cool 10 minutes, repeat.
Hand-wash the carafe and filter basket in soapy water.
You can also wash the carafe in the dishwasher.
If the vinegar odor is still present after two rinsings, run more water through coffee maker.
Vinegar
Soap
Water
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