Ingredients:
500g beef sirloin, thinly sliced
1/2 cup cornstarch
1/4 cup vegetable oil (for frying)
1 orange (zest and juice)
3 tablespoons soy sauce
2 tablespoons rice vinegar
3 tablespoons brown sugar
2 cloves garlic, minced
1 teaspoon fresh ginger, grated
1 tablespoon hoisin sauce
1 teaspoon chili flakes (optional)
1/2 cup beef broth
1 tablespoon cornstarch (for sauce thickening)
1 red bell pepper, sliced
1 cup broccoli florets
2 green onions, chopped
Sesame seeds for garnish