Start with fresh, cold waterThis is especially important if you're using a drip coffee maker. Store coffee beans in an airtight container in a cool, dark placeCoffee beans that are exposed to light or heat will go stale faster. Clean your coffee maker regularly to prevent a buildup of oils and residueCleaning your coffee maker regularly will help keep your coffee tasting fresh. I like to run a vinegar solution through my coffee maker once a month to clean it. Following these 10 rules will help you make a perfect cup of coffee every time.