Sauce, Signature, Creamy Pepper, Bottle 15.5 OZ Made famous on the patty melt. The flavor that made our patty melt a favorite is yours for the squeezing. Put it on a sandwich, dip chicken in it or get creative, the patty melt won't mind. For questions & comments, please call 1-855-927-3824. Whataburger.com. Lot number and best by date on package.