Jack in the Box is giving away free cheeseburgers for National Cheese Day

• Jack in the Box is giving away free cheeseburgers for National Cheese Day.
• Starting Monday, customers can order a free Jack in the Box Ultimate Cheeseburger on DoorDash by using the promo code "SAYCHEESE."
• The DoorDash delivery fee will also be waived on orders of $10 or more.
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Jack in the Box is giving away free cheeseburgers for National Cheese Day.

Starting Monday, customers can order a free Jack in the Box Ultimate Cheeseburger on DoorDash by using the promo code "SAYCHEESE." The delivery fee will also be waived on orders of $10 or more.

The Ultimate Cheeseburger is Jack in the Box's burger with two beef patties, American and Swiss-style cheese, mayonnaise, mustard, and ketchup.

Read more: Burger King and Wendy's slam Jack in the Box after Kim Kardashian tweets a mysterious complaint about the burger chain

Jack in the Box will be delivering free burgers until Sunday, June 9, or until supplies run out. Customers can only get one free cheeseburger.

National Cheese Day is Tuesday, June 4.

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