Available for a limited time, the new burger features two beef patties, three slices of cheese, garlic grilled onions, and Gulden's mustard on a pretzel bun.
In comparison, the original Triple Double includes two beef patties, three slices of cheese, lettuce, tomato, onion, pickles, ketchup, and Smash sauce on an egg bun.
Photo via Smashburger.
