Chinese Pepper Steak with Onions

Marinate the Beef: In a bowl, combine soy sauce, rice vinegar, oyster sauce, hoisin sauce, and sugar. Add the sliced beef, toss to coat, and marinate for 15–20 minutes.
Prepare the Sauce: Mix cornstarch and water in a small bowl to make a slurry; set aside.
Cook the Beef: Heat 1 tablespoon of vegetable oil in a wok or large skillet over medium-high heat. Stir-fry the beef in batches until browned, then remove and set aside.
Cook the Vegetables: Add the remaining oil to the skillet. Stir-fry the onion, bell peppers, garlic, and ginger until slightly softened.
Combine and Simmer: Return the beef to the skillet. Pour in the cornstarch slurry, stir well, and cook until the sauce thickens. Adjust seasoning with salt and pepper.
Serve: Serve hot over cooked rice or noodles.
Enjoy your flavorful Chinese Pepper Steak with Onions! 🥢