Heat the oven to 350°F (176°C).
Place a glass or mug in the freezer.
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).
Blanch the fries:If using the oven: Place the fries on a parchment-lined baking sheet. Cook in the oven until tender, about 15 to 20 minutes.If using oil: Heat the oil to 300°F (150°C) in a Dutch oven or deep fryer. Fry fries in small batches until softened, about 6 to 10 minutes. Heat the oil to 375°F (191°C).
Lightly toast the buns.
Heat a skillet over medium-high heat.
Cook the burger patties: add the patties to the heated skillet 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 cover it with a lid to melt.
Cook the potatoes: Fry them in the oil and cook until crispy and golden brown (cook in batches as needed; overcrowding will result in limp fries). Remove to a paper towel-lined large bowl and season with salt immediately to taste.
Compose the burger: Spread your favorite condiments on the inside of the bun. Place the patty on the bun with lettuce, tomato, and onion.
Pour the soda into a frosted glass or mug.
Serve: Enjoy the cheeseburger with french fries, ketchup, pickle, and soda.