Jack in the Box introduces the new Sourdough Patty Melt as part of a limited-time $4.99 combo deal at participating locations.

The Sourdough Patty Melt features a 100 percent beef patty, grilled onions and mayo along with Swiss and American cheese on toasted sourdough bread.

The new melt is available on its own or as part of a combo served with a drink and fries for a suggested price of $4.99.

Image – Jack in the Box