Equipment
Ingredients
Burger Sauce
- 60 g mayonnaise
- 30 g ketchup
- 20 g dill pickle relish
- 15 g yellow mustard
Patties and Seasoning
- 480 g ground beef (80/20 chuck), chilled
- 6 g fine sea salt
- 2 g freshly ground black pepper
- 15 ml neutral vegetable oil
Assembly
- 4 brioche hamburger buns, split
- 30 g unsalted butter, softened
- 8 american cheese slices
- 16 dill pickle chips
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 830 kcal
- Protein
- 36 g
- Carbohydrates
- 36 g
- Fat
- 61 g
- Saturated Fat
- 25 g
- Zinc
- 6.1 mg
Sources: Aggregated Public Data, USDA FoodData Central
Method
Whisk the mayonnaise, ketchup, yellow mustard, and dill pickle relish in a small mixing bowl until completely blended into a smooth diner burger sauce.
Divide the chilled ground beef into 8 equal portions of 60 grams each and gently shape them into loose round balls without overworking, then place them on a plate and chill in the refrigerator; wash hands and contact surfaces immediately after handling raw beef to prevent cross-contamination.
Spread the softened unsalted butter evenly across the cut faces of the hamburger buns.
Place the buttered buns cut-side down into a dry cast-iron skillet over medium-low heat and toast for 2 to 3 minutes until golden brown and aromatic, then transfer to a clean plate.
Increase the heat to high and preheat the cast-iron skillet for 5 minutes until smoking faintly at 230°C (450°F), then brush the cooking surface with neutral vegetable oil.
Place two cold beef balls into the smoking skillet leaving ample space between them, place a parchment paper square over each ball, and smash down forcefully using a rigid metal spatula for 10 seconds until very thin with ragged, lacy edges, then discard the paper.
Season the smashed patties directly on the skillet with a generous pinch of fine sea salt and freshly ground black pepper.
Cook the patties undisturbed on high heat for 90 seconds until a deeply browned crust forms and juices bead on the top, then slide the rigid metal spatula flat against the skillet to scrape up the crust, flip the patties, and verify the interior reaches at least 71°C (160°F) using an instant-read digital food thermometer.
Immediately place a slice of American cheese on top of each flipped patty and cook for 30 seconds until melted, then stack one cheesed patty on top of the other to create a double stack.
Transfer the stacked patties to a plate and repeat the smashing, seasoning, searing, cheesing, and stacking steps with the remaining six beef portions in batches of two.
Spread a generous tablespoon of the burger sauce over each toasted bottom and top bun, place a warm double-patty stack onto each bottom bun, arrange four dill pickle chips over the cheese, cover with the top bun, and serve immediately.
Chef's Notes
- Keep the ground beef thoroughly chilled until the precise moment it hits the screaming-hot cast iron. Cold fat smashes and sears instantly on contact without rendering prematurely during handling.
- Stick strictly to an 80/20 lean-to-fat ground chuck blend. Leaner ground beef formulas dry out rapidly on a high-heat griddle and cannot form the signature crispy lacy perimeter.
- Smash the patties within the first 30 seconds of pan contact. Smashing early locks in the thin geometry; smashing later merely forces out juices after protein fibers have tightened.
- A completely rigid stainless steel spatula with a square edge is essential. A flexible silicone or nylon turner will buckle under the required pressure and leave your hard-earned crust welded to the pan.
Storage
Refrigerator: 3 days — Store cooked patties separately from buns and toppings in an airtight container at or below 4°C (40°F) within 2 hours of cooking.
Freezer: 2 months — Layer cooked patties between parchment paper sheets inside a heavy-duty freezer bag; thaw overnight under refrigeration before reheating.
Reheating: Reheat refrigerated patties in a covered skillet over medium heat with a splash of water until the internal temperature reaches at least 74°C (165°F) throughout.
Troubleshooting
Meat sticks to the spatula and tears apart during the smash
Cause: Pressing bare metal directly against raw ground beef without a non-stick barrier
Fix: Peel the spatula away at an angle rather than pulling straight up, then patch the patty back together flat
Prevention: Always place a small square of parchment paper between the beef ball and spatula before pressing down
Patties are gray and steamed rather than deeply browned and crispy
Cause: The cast-iron skillet was not sufficiently hot or too many patties crowded the pan, trapping moisture
Fix: Cannot be fixed for the current batch; increase heat to high and let the pan recover heat before smashing the next batch
Prevention: Ensure the pan preheats to 230°C (450°F) until lightly smoking and cook no more than two patties at once
The browned crust tears off and stays stuck to the bottom of the skillet
Cause: Using a flexible or blunt spatula that rode over the crust instead of scraping underneath it
Fix: Scrape the browned bits up from the skillet using the spatula edge and press them back onto the hot cheese
Prevention: Use a stiff, sharp-edged metal spatula held flat against the pan floor to firmly scrape beneath the sear
Cultural Context
The smashed hamburger is an iconic pillar of mid-20th century American lunch counters and roadside diners, with roots tracing back to early short-order spots in Kentucky and the Midwest. Line cooks discovered that slamming ground beef flat against blazing flattops dramatically accelerated service times while maximizing the savory Maillard reaction. This efficient technique produced the coveted crisp, lacy borders that continue to define classic American diner cuisine.
