Begin by dividing your ice-cold ground beef into four equal balls, each approximately 4 ounces. Set aside while you preheat your cast iron skillet over medium-high heat until it shimmers lightly.

Transfer the beef balls into the skillet, ensuring they are evenly spaced apart. Allow the beef to sear for about 2 minutes without moving it, letting it develop a nice golden crust.

Using a heavy spatula, press down firmly on each beef ball until they are paper-thin with irregular edges. Season each patty with kosher salt and coarsely ground black pepper.

Carefully flip each patty and immediately place a slice of Yellow American cheese on each one. Cover the skillet with a lid to melt the cheese beautifully.

Toast your brioche buns in a separate pan or on the edge of your skillet until golden brown and slightly crispy. Spread the tangy burger sauce on the bottom half.

Stack the cheesy patties on top of the sauced bun, then place the top half of the brioche bun over the patties and serve hot.