Thinly slice the beef against the grain. Transfer the slices to a large mixing bowl and mix with cornstarch, egg white, sesame oil, and oyster sauce, ensuring each piece is evenly coated. Marinate for a minimum of 30 minutes or overnight in the fridge.
Slice the broccoli into bite-sized pieces suited for quick cooking. Cook, steam, or grill the broccoli over charcoal or in a grilling pan over low heat to give it a smoky flavor. (optional)
Add oil to a wok over medium heat and sauté the garlic until fragrant and golden. Add sliced chilies if desired.
Add the marinated beef slices, searing them quickly.
Stir in the seasonings. Add oyster sauce, light soy sauce, dark soy sauce, and white sugar. Mix well and ensure each slice of beef is coated.
Toss in the broccoli. Cook it until soft to your liking. I like mine with a bit of a crunch, so I give it a quick sauté before serving immediately.
Notes
Use the nutrition card in this recipe as a guideline.
The beef can be substituted with chicken, pork, or other protein.