THE SMASH BURGER - Double Patty, Smash Sauce & American Cheese
The burger that changed what a burger could be.
The smash burger is not complicated. It is a ball of loose, fatty beef mince pressed hard onto a screaming hot flat surface, held there for exactly the right amount of time, then left alone. The Maillard reaction does the rest. What you get is a thin, lacey-edged patty with a deep brown crust, a soft interior, and more flavour per bite than a thick patty twice its size. The science is simple. The execution requires attention.
Two patties, always. One is not enough. The double stack with American cheese melted between the layers is the standard for a reason. Add a smash sauce built on mayo, pickles, and a little mustard, a handful of finely sliced white onion, and a milk or potato bun toasted in the residual fat from the patties. That is the whole thing. Nothing more is needed.
This recipe is built for a BBQ flat plate or a cast iron pan over coals. You need direct, even, intense heat and a flat surface. A grill grate will not give you the crust. The flat plate is the tool.
AT A GLANCE
Serves 2 (2 burgers)
Prep Time 15 minutes
Cook Time 6 to 8 minutes
Fire Setup Direct high heat, flat plate or cast iron
Surface Temp 220 to 250 degrees C
Difficulty Easy to moderate
INGREDIENTS: THE PATTIES
500 g Beef mince, 80/20 fat ratio (chuck or brisket blend preferred)
Flaky sea salt and cracked black pepper
4 slices American cheese (or good quality cheddar)
2 Burger buns (Brioche, milk or potato)
1 tbsp Neutral oil or beef tallow for the plate
INGREDIENTS: SMASH SAUCE
4 tbsp Whole egg mayonnaise
2 tbsp Dill pickles, finely chopped
1 tbsp Yellow mustard
1 tsp White wine vinegar
1 tsp Caster sugar
Salt and white pepper to taste
INGREDIENTS: TOPPINGS
1/2 White onion, very finely sliced (if you can’t find white onion go with Red onion not brown onion)
Dill pickle slices
Lettuce (oak, coz, iceburg or butter)
Sliced tomato (optional)
METHOD
01. MAKE THE SMASH SAUCE
Combine the mayonnaise, finely chopped pickles, yellow mustard, white wine vinegar, and caster sugar in a small bowl. Season with salt and white pepper. Mix well and refrigerate until needed. The sauce improves with 20 minutes of resting time as the flavours come together.
- Make the sauce first. It needs time to settle and you will not want to stop once the patties are on.
02. PREP THE ONION
Use your Classic Chef's Knife to slice the white onion as finely as possible. You want translucent, almost paper-thin rings. Place them in a small bowl of cold water for 10 minutes, then drain and pat dry. This removes the harsh raw bite and keeps them crisp.
- The finer the onion, the better it integrates into the burger. Rough chunks compete with everything else.
03. PORTION THE MINCE
Divide the mince into 4 equal balls of approximately 125 g each. Handle them as little as possible. Do not compact or overwork the meat. Loose, lightly packed balls give you the best crust and the most tender interior. Season the outside of each ball generously with flaky salt and cracked pepper just before cooking.
- Cold mince holds together better on the hot plate. Keep the balls in the fridge until the surface is ready.
04. GET THE SURFACE SCREAMING HOT
Heat your BBQ flat plate or cast iron pan over direct high heat for at least 5 minutes. Add a small amount of neutral oil or beef tallow and let it smoke off. The surface must be at 220 to 250 degrees C before the mince goes on. A drop of water should evaporate instantly on contact. If it does not, wait longer.
- Patience here pays off. An underheated surface steams the patty instead of searing it. You will not get the crust.
05. SMASH THE PATTIES
Place two mince balls onto the hot surface, spaced well apart. Immediately press each ball firmly and decisively with a solid, heavy-based spatula, using a piece of baking paper between the spatula and the meat to prevent sticking. Press down hard and hold for 10 seconds. You are aiming for a patty 8 to 10 mm thick with thin, lacy edges. Do not move them once smashed.
- One firm press, then leave it. Resist the urge to move or check. The crust releases naturally when it is ready.
06. COOK AND FLIP
Cook undisturbed for 2 to 3 minutes until the edges are visibly brown and the top of the patty has changed colour about halfway up. Flip once with a flat spatula, scraping the crust cleanly from the surface. Immediately place a slice of American cheese on each patty. Cook for a further 60 to 90 seconds.
- The crust is everything. If it tears when you flip, the surface was not hot enough or you flipped too early.
07. STACK AND MELT
Stack one patty on top of the other while still on the heat. The cheese between the layers will begin to melt from the residual heat. Add a second slice of cheese on top of the stack if desired. Cook for a further 30 seconds until the cheese is fully melted and the stack is cohesive.
- Stacking on the heat rather than off it gives you a fully melted, unified double patty rather than two separate layers.
08. TOAST THE BUNS
Place the buns cut-side down on the flat plate in the residual fat from the patties. Toast for 30 to 45 seconds until golden. Watch them closely. Brioche burns faster than you expect.
- The fat left on the plate from the patties is flavour. Use it.
09. BUILD AND SERVE
Spread smash sauce generously on both bun halves. The double patty stack, sliced pickles, and the finely sliced onion, lettuce. Close the bun and serve immediately. The smash burger does not wait.
- Serve within 60 seconds of building. The bun softens fast and the crust loses its texture if it sits.
SERVE WITH
Shoestring fries cooked in beef tallow. A simple coleslaw with apple cider vinegar dressing. Cold lager or a sharp, cold-pressed apple cider. Keep it honest.
THE RIGHT KNIFE
One knife earns its place at the smash burger cook. The Classic Chef's Knife handles everything that needs a blade: fine onion, pickle chopping, slicing tomato, and any other prep work before the patties hit the plate. The smashing itself is done with a solid, heavy-based spatula. Sharp, flat, and unapologetic.
