1. Marinate the Beef:
In a bowl, mix soy sauce, cornstarch, sesame oil, and black pepper.
Add the beef cubes, coat well, and let it marinate for 15-20 minutes.
2. Prepare the Sauce:
In a small bowl, mix soy sauce, oyster sauce, and sugar. Set aside.
3. Cook the Beef:
Heat 1 tbsp of oil in a wok or large skillet over high heat.
Add the marinated beef and stir-fry for 2-3 minutes until browned. Remove and set aside.
4. Stir-Fry the Garlic and Rice:
