BEST-EVER PEPPER STEAK

INGREDIENTS

1/4 cups low-sodium soy sauce

2 tablespoons of rice wine vinegar

4 teaspoons packed brown sugar

1 tablespoon cornstarch

2 tablespoons vegetable oil, divided

Kosher salt

Freshly ground black pepper

1 pound flank steak, thinly sliced against the grain

1 red bell pepper, thinly sliced

1 green bell pepper, thinly sliced

3 cloves garlic, minced

1 tablespoon freshly minced ginger

Cooked white rice, for serving