Proper Coffee Bean Storage The coffee bean coffee’s four greatest enemies are light, heat, air and moisture. In a perfect world, coffee should be ground, brewed, and then consumed quickly to obtain the best flavor. Coffee bean coffees are at their peak within 24 to 84 hours after roasting and then they start to go stale after that (within a week, the original flavor will have deteriorated some depending on the storage method).If you can, it is best to buy fresh-roasted coffee in quantities...