Boiled Egg with Beef

👨‍🍳 Ingredients • Beef slices • Eggs • Red onion • Cooking wine • Light soy sauce • Oyster sauce • Sugar • Black pepper • Green onion (for garnish) 📝 Steps 1. Marinate beef with 1 tbsp cooking wine, 1 tbsp cornstarch, a pinch of black pepper. Let sit for 20 mins. 2. Heat oi