In between the bun, you'll also find two beef patties, American cheese, lettuce, and pickles.
For the length of its limited time stay, the Bonus Jack is offered in a combo with a small order of fries and a drink for $4.49.
It's being promoted with a new TV spot playing up the burger's retro angle:
The Bonus Jack is not offered in Cincinnati.
Nutritional Info - Jack in the Box Bonus Jack
Calories - 540 (from Fat - 290)
Fat - 33g (Saturated Fat - 13g)
Sodium - 1062mg
Carbs - 34g (Sugar - 6g)
Protein - 25g