Beef Broccoli Stirfry

Name: Beef & Broccoli Stirfry
Ingredients: 2 teaspoons vegetable oil; 2 tablespoons fresh ginger; 2 cloves garlic; 1/4 teaspoon red pepper flakes; 1/2 pound boneless sirloin or flank steak; 2 cups broccoli florets; 2 tablespoons soy sauce (regular or reduced-sodium); 2 tablespoons vinegar (wine or rice vinegar work well); 1 tsp cornstarch whisked with 1 tablespoon water; 2 cups cooked angel hair pasta or 2 cups cooked rice