The Valve on Your Coffee Bag Can Tell You How Fresh the Beans Are
Amazon.com: Kraft Paper Stand Up Coffee Bag/Flat Bottom Pouch with Air Release Valve and Reusable Side Zipper. (50pcs, ½lb/8oz, 250g) : Health & Household
Dunkin Original Blend Whole Bean Coffee, Medium Roast, 12 oz. Bag - Walmart.com