Korean Cheeseburgers With Sesame-Cucumber Pickles

These double-stacked cheeseburgers bring all the savory-sweet flavors of grilled Korean barbecue. A garlicky scallion marinade helps build flavor three different ways: stirred into burger mix, brushed on the patties to form a glaze, and combined with mayonnaise to create a special sauce. The burgers are formed into thin patties, set on a baking sheet and broiled for maximum caramelization and weeknight ease. Roasted sesame oil rounds out tangy pickles and bolsters the burger with extra umami.

Ingredients

• 2

  teaspoons distilled white vinegar

• Kosher salt and black pepper

• 2

  tablespoons plus 1 teaspoon turbinado sugar

• 2

  large Persian cucumbers, sliced 1/8-inch-thick

• ¼

  cup low-sodium soy sauce

• 2

  tablespoons chopped scallions

• 2

  teaspoons minced garlic

• ½

  cup mayonnaise

• 2 ½

  teaspoons roasted sesame oil

• 1 ½

  pounds ground beef (preferably chuck or sirloin)

• 4

  slices American cheese

• 4

  hamburger buns

• Butter lettuce, sliced onions and sliced tomatoes, for serving

Preparation

1. In a medium bowl, combine vinegar, 1 teaspoon salt and 1 teaspoon sugar, stirring to dissolve the sugar. Add cucumbers and toss to coat, then let stand at room temperature.
2. Heat broiler to high and set oven rack set 6 inches from heat. In a small bowl, combine soy sauce, scallions, garlic, 1/2 teaspoon pepper and remaining 2 tablespoons sugar. Mix well, stirring until the sugar is dissolved. Transfer 1 tablespoon of the marinade to a small bowl and stir in mayonnaise and ½ teaspoon sesame oil. Set aside.
3. In a medium bowl, combine beef and 3 tablespoons of the scallion marinade. Gently mix to incorporate. Form into 8 thin patties (each about 4 ½ inches wide) and arrange in a single layer on a rimmed baking sheet. Brush tops with half of the remaining marinade. Flip and brush with the remaining marinade. Broil until golden and caramelized on top, about 4 minutes.
4. Arrange cheese on 4 patties, top with the remaining patties and let stand until cheese melts, about 1 minute.
5. Pour off all the liquid from the cucumbers and stir in the remaining 2 teaspoons sesame oil.
6. Smear the cut side of the buns with some of the seasoned mayonnaise. Arrange bottom buns on plates. Layer with lettuce, onion, tomato, double-stack burgers, pickles and top bun. Serve with extra pickles on the side.