Sonic has a wide variety of burgers available. What you see on the traditional menu is just a small fraction of the ones they make. There's the Dixie Cheeseburger, the Thousand Island Jr. Cheeseburger, the California Cheeseburger, and the Super Sonic Jalapeno Cheeseburger, to name a few. If you'd like a burger that's not currently on the menu, just ask. They probably have all the ingredients on hand needed to make one of the secret menu items.
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