For the steak
01 -
1 1/2 lb (680 g) flank steak
02 -
1 teaspoon kosher salt
03 -
1/2 teaspoon black pepper
For the marinade
04 -
1/3 cup (80 ml) balsamic vinegar
05 -
3 tablespoons olive oil
06 -
2 tablespoons low-sodium soy sauce
07 -
2 tablespoons packed brown sugar
08 -
4 cloves garlic, minced
09 -
1 tablespoon chopped fresh rosemary
10 -
1 tablespoon Dijon mustard
11 -
1 teaspoon Worcestershire sauce
For serving
12 -
1 tablespoon chopped fresh parsley, optional
13 -
Flaky salt, optional