Prep the ingredients per the instructions above.
Prep the potatoes: Cut the potatoes into 1/4-inch thick sticks. Place into a large bowl and cover completely with cold water for 20 minutes (see note). Drain well and pat dry with a towel. While the potatoes are soaking, make the burger patties.
Mix together the ground beef, steak seasoning, and Worcestershire sauce. Form into even patties. Transfer to a plate, cover with plastic wrap, and reserve in the fridge until you are ready to cook (see note).
Cook the fries: Place the fries in an air fryer and cook according to the directions in the manual. Approximately 20 minutes.
Lightly toast the buns.
Heat a grill or grill pan over medium heat.
Cook the burger patties: Add the patties to the grill and cook on both sides, getting a nice crusty char to the desired doneness (see note) using a thermometer. When the burger is 3/4 of the way cooked to your liking, add the cheese and cook until melted.
Compose the burger: Spread your favorite condiments on the inside of the bun. Place the patty on the bun with lettuce, tomato, and onion.
Mix together the ingredients for the lemonade. Add sugar to taste. Serve over ice.
Serve: Enjoy the cheeseburger with french fries, ketchup, pickle, and lemonade.