Ingredients
Equipment
Method
- In a medium bowl, combine the sliced flank steak with 1 tablespoon soy sauce, 1 tablespoon cornstarch, 1 tablespoon vegetable oil, 1 teaspoon sugar, 1/2 teaspoon ground ginger, and 1/4 teaspoon black pepper. Mix well to ensure the beef is evenly coated. Let it marinate for at least 20 minutes, or up to an hour in the refrigerator.
- While the beef is marinating, slice the onion and bell peppers. Mince the garlic and ginger.
- In a small bowl, whisk together the beef broth, 2 tablespoons soy sauce, oyster sauce, 1 tablespoon cornstarch, 1 tablespoon sugar, sesame oil, and 1/4 teaspoon black pepper. Set aside.
- Heat 1 tablespoon of vegetable oil in a large skillet or wok over high heat. Add the marinated beef and stir-fry until browned on all sides, about 2-3 minutes. Don't overcrowd the pan; cook the beef in batches if necessary to ensure proper browning. Remove the beef from the skillet and set aside.
- Add the remaining 1 tablespoon of vegetable oil to the skillet. Add the sliced onion and bell peppers and stir-fry until slightly softened, about 3-4 minutes. Add the minced garlic and ginger and stir-fry for another minute until fragrant.
- Return the cooked beef to the skillet with the vegetables. Pour the sauce over the beef and vegetables. Bring to a simmer and cook, stirring constantly, until the sauce has thickened, about 1-2 minutes.
- Serve immediately over rice or noodles. Garnish with sesame seeds or chopped green onions, if desired.
Notes
Slicing the beef thinly against the grain is crucial for tenderness. Make sure your wok or skillet is screaming hot before adding the beef and vegetables for a 'wok hei' flavor. Don't overcook the vegetables; stir-fry them until they're crisp-tender. Adjust the sauce to your liking by adding more sugar for a sweeter sauce or red pepper flakes for more heat. Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or skillet, adding a splash of water or beef broth if the sauce has thickened.
