5 chicken breasts
2/3 cup apple cider vinegar
1 cup firmly packed brown sugar
2-3 tablespoons finely chopped garlic
1/4 cup lemon-lime soda (regular or diet)
2 tablespoons soy sauce
1 teaspoon freshly ground black pepper
2 tablespoons cornstarch + 2 tablespoons water
Optional: crushed red pepper flakes