Ingredients
Beef	400g
Precut Zha Cai	1 pack (~ 70g)
Olive oil	1 tablespoon
Marinade Ingredients
Soya sauce	2 teaspoons
Olive oil	1 teaspoon
White pepper	⅛ teaspoon
Sauce Ingredients
Oyster sauce	1 tablespoon
Corn starch	1 teaspoon
Water	¼ cup

Directions

1. Cut beef across grain into thin slices.
2. Marinate beef with marinade ingredients for 30 minutes.
3. Pre-mix cornstarch and water together and set aside.
4. Preheat 1 tsp of olive oil in a wok over high temperature; add in beef and oyster sauce.
5. Sauté until beef is half cooked; put in Zha Cai.
6. When beef is almost cooked; quickly remix the cornstarch solution and add in.
7. Stir fry until beef is cooked and sauce is thick.