Myth #1: Bulk Coffee at the Grocery Store is the Best Product to Buy
Oxygen and bright light are the worst flavor busters for roasted beans. Unless the store is conscientious about selling fresh coffee, the storage tubes can get coated with coffee oils, which turn rancid, so be wary of bulk coffee from supermarket display bins. Your best bet to get the absolute freshest beans is to buy from a local roaster (or roast your own). At the grocery store, opt for coffee beans packaged by quality-conscious roasters and sold in sturdy, vacuum-sealed bags.