There are a number of ways to screw up coffee, Cafe Campesino owner Maria Moore-Riggs says with a smile. Here's the way to do it well. For starters, treat your beans right. Store your coffee beans in an airtight container, preferably metal or glass. Ideally buy only as much coffee as you will use in one or two weeks. Keep a one-week supply on the counter, and freeze for longer storage.