A burger fancy enough for date night? Oui!
Combine beef with garlic, onion, Worcestershire and Kosher salt. Form 4 large patties slightly thinner at center and thicker at edges for even cooking; make the edges as uniform as possible. Pour black pepper into a shallow dish and roll the edges of the burgers into the peppercorns, coating evenly, to crust the edges of each patty.
Heat a cast-iron skillet over medium-high heat. Heat a griddle for the buns or preheat the broiler to toast them on a baking sheet.