Blueberries give this lip-smacking barbecue sauce multiple levels of fresh appeal. One hits you at first glance upon seeing its unexpected indigo color. Another — its flavor — is fresher than a traditional sauce, with the fruit lending its gentle, nuanced sweetness to the tangy-savory mix. That sweetness is backed up by a drizzle of molasses, so this sauce has none of the highly refined sugar that tops the ingredient list of most bottled barbecue sauces, nor the artificial additives. Adding to its health appeal, the sauce also has less salt and more nutrients than its counterparts.