Smash Burger

A smash burger is decided in the first ten seconds, when a loose ball of ground beef is dropped onto a griddle hot enough to hurt and pressed flat with a stiff spatula and a second weight behind it. The ball has to be flattened within moments of hitting the steel and held down hard, because the entire reason for the technique is to drive as much raw meat into direct contact with the metal as possible while it is still cold enough to spread. Wait too long, or press too gently, and the crust never forms.

The crust is the whole object. A thick burger browns on a fraction of its surface. A smashed one browns on nearly all of it. Pressed thin against the iron, the beef's proteins and sugars meet the heat at once and brown deep and fast, the Maillard reaction running across the full craggy underside instead of a narrow band. The flavor is not seasoned in; it is built by contact. That is why a smash burger tastes of beef the way a roast does, all edge and fond, and why a gently grilled patty never quite gets there.

The technique punishes hesitation in both directions. A griddle that is not hot enough steams the beef gray instead of searing it, and the patty comes off pale and limp with no crust to speak of. Press a patty that has already begun to cook and you tear it instead of spreading it, losing the lacy edge entirely. Leave it on too long after the crust sets and a patty that thin goes from juicy to dry in seconds, because there is almost no interior to hold moisture. The window is the difference between a smash burger and a sad gray disc.

The scrape is the step amateurs skip and cooks live by. Once the crust has set, the patty is lifted not by sliding under it but by getting a sharp-edged spatula flat to the steel and shearing it off, taking every bit of the browned fond with it. Slide too soon and the crust stays welded to the griddle while the soft top comes away in your hand. The flip happens once, late, and the cheese goes on the instant it does, so it melts on residual heat rather than needing more cooking.

Standing near the griddle you get the sound long before the taste: the violent hiss as the ball is pressed, the scrape of steel on steel, the fat spitting off the edges. The smell is hard sear and a little smoke. The finished patty is dark and brittle at its lacy rim, the cheese half-melted and draped over the craggy top, the bun toasted slick on the same fat. The first bite snaps at the edge where the crust is thinnest and gives in the middle where the cheese pooled. It eats fast and small, two thin patties often stacked to make a real mouthful.

The smash burger has its own grammar now, most of it about the patty count. A single is rarely enough, so the default order at a smash-focused counter is a double, two thin crusted patties with cheese between and on top, and the word "smash" on a menu signals a thin crusted patty the way "steakburger" once did at Steak 'n Shake. Griddle-cook culture treats the lacy edge as the thing to chase, and a kitchen that smashes to order will let a line build rather than press patties ahead, since a smashed patty held warm loses the crispness the smash was for.

Its relatives are a family of griddle burgers. The Oklahoma onion burger smashes a fistful of shaved onion into the raw beef so the two crisp together, a near cousin born of stretching meat with onion in the 1920s. The thick pub burger is the opposite hardware, a tall griddled or grilled patty kept juicy by mass, and the standard fast-food cheeseburger sits between, thin but rarely crusted the way a true smash is. Each is beef shut inside a bun, sandwich by structure whatever the name on the menu; the smash is the one that exists for the crust the method makes.

Everyone Claims the Smash

Several towns claim the smash burger, and its history is best told as a tangle of competing stories rather than a single date. Thin patties pressed into a hot surface for speed are nearly as old as the griddle burger itself; the food historian George Motz has long pointed out that many of the earliest American hamburgers, cooked at fairs and lunch counters in the early 1900s, were pressed thin in exactly this way. The Oklahoma onion burger has been smashed since the Depression, and Indiana's Miner-Dunn traces griddle-smashed burgers back to the 1930s.

The most-repeated single origin is folklore worth flagging as folklore. The story credits Bill Culvertson at a drive-in called Dairy Cheer in Ashland, Kentucky, who in the 1950s or 1960s is said to have pressed beef balls flat with a heavy can of beans and found the crust the better for it. The tale is charming and could even be true, but it is undocumented and plainly not the first instance of the technique, since pressed-thin patties predate it by decades. The smash is better understood as a method many cooks reached for than as one person's invention.

What is datable is the revival, not the origin. The method lived for decades in diners and at chains like Steak 'n Shake, founded in 1934 on a steakburger ground and smashed to order, before a wave of fast-casual shops made it a style with a name. Shake Shack grew from a 2001 hot-dog cart in Madison Square Park into a griddle-smashed-patty chain, and Smashburger, the company that lent the technique its current label, was founded in Denver in 2007, turning an old lunch-counter shortcut into the burger a generation now orders by the crust.