For the sauce
01 -
1/2 cup (115 g) mayonnaise
02 -
3 tablespoons ketchup
03 -
2 tablespoons sweet pickle relish
04 -
1 teaspoon yellow mustard
05 -
1 teaspoon white vinegar
06 -
1/4 teaspoon garlic powder
07 -
1/8 teaspoon fine salt
08 -
1/8 teaspoon black pepper
For the fries and toppings
09 -
1 tablespoon unsalted butter
10 -
1 teaspoon neutral oil
11 -
1 medium yellow onion, finely chopped
12 -
1/4 teaspoon fine salt, plus more for fries
13 -
1 bag (28 oz or 790 g) frozen shoestring fries
14 -
6 slices American cheese