Sourdough Jack
A juicy beef patty layered with melted Swiss-style cheese, crispy bacon, fresh tomato, and mayo, all served on toasted sourdough bread for a bold twist on the classic burger.
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$6.89 . 700 Calories
About The Burger
The Sourdough Jack at Jack in the Box is a signature burger that stands out for its unique sourdough bread base instead of a traditional bun. It features a 100% beef patty topped with creamy Swiss-style cheese, thick-cut bacon, a fresh tomato slice, and mayo, all stacked between two slices of golden toasted sourdough.
This burger is part of Jack in the Box’s long-time fan favorites, delivering a rich, savory flavor with the perfect balance of smokiness from the bacon and tang from the sourdough. It’s hearty enough to enjoy on its own but pairs perfectly with seasoned curly fries and a fountain drink for a complete meal that’s both satisfying and unique.
