Mix mayonnaise, ketchup, mustard, relish, vinegar, garlic powder, and paprika until smooth, then refrigerate

Cook fries until crispy, extending time slightly for extra crunch

Form beef into patties and cook on a griddle with mustard and seasoning until browned, then flip and finish

Sauté onions with butter until soft and lightly golden, stirring to avoid burning

Chop cooked beef into bite sized pieces

Lay tortilla flat, spread sauce, add fries, cheese, beef, onions, and more sauce

Roll tightly and cook seam side down until golden and crisp on both sides

Slice if desired and serve warm with extra sauce