1. Prepare the Confidential Sauce:
In a small bowl, mix the mayonnaise, ketchup, chopped pickles or relish, Dijon mustard, Worcestershire sauce, salt, and pepper. Adjust seasoning to taste. Cover and refrigerate until ready to use.

2. Form the Patties:
Divide the ground beef into 4 equal portions and shape each into a ball.

3. Heat the Skillet:
Heat a skillet or griddle over medium-high heat.

4. Smash the Patty:
Place one ball of ground beef on the hot skillet. Using a spatula or burger press, firmly smash the ball into a thin patty. Sprinkle the top with salt and pepper.

5. Cook the Patty:
Cook the patty for 2–3 minutes on the first side until a crust forms. Flip and cook for another 2–3 minutes until the patty reaches your desired doneness. Add a slice of cheese to the patty during the last minute of cooking, if desired.

6. Toast the Buns:
Toast the burger buns lightly on the skillet for extra flavor and texture.

7. Assemble the Burger:
Spread a generous amount of Confidential Sauce on the bottom half of the bun. Place the smashing patty on top, add your choice of toppings (lettuce, tomato, onions, pickles, etc.), and cover with the top bun.

8. Serve:
Serve the burgers hot with sides like fries, onion rings, or a fresh salad.