Old Mule is all-natural…is gluten-free and contains no high-fructose corn syrup, soy, MSG, or artificial preservatives! Each jar contains 18 oz. (net wt.) of our Old Mule Sauce. Jars of Old Mule are perfect for the pantry to have on hand, camping, or as gifts. Buy your gourmet Old Mule Barbecue sauce here. You could even buy extra and share it with friends and family.