Resolute Reserve Coffee Barrel 2 LiterResolute Reserve Coffee Barrel Coffee Beans or Coffee Grounds that are stored in whiskey barrels will take on the flavor of the barrel it is kept in. We encourage you to soak your coffee barrel with your favorite drink (e. g. brandy, scotch, whiskey, bourbon, etc) let it sit and absorb inside and put the cork lid on. Check back in a few days empty out and pour in your coffee beans or grounds or follow a soak method for your beans to get great flavor.