Making Chinese Beef and Broccoli at home is straightforward if you follow these clear steps:

1. Prepare the Beef: Slice the flank steak thinly against the grain. This ensures tenderness. Marinate with soy sauce, cornstarch, and a pinch of salt for about 15 minutes.
2. Heat Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat.
3. Cook Beef: Add the marinated beef to the pan, cooking until browned on all sides, about 3-5 minutes. Remove the beef from the pan and set aside.
4. Sauté Garlic and Ginger: In the same pan, add minced garlic and ginger. Sauté for about 30 seconds until fragrant.
5. Add Broccoli: Toss in the broccoli florets and stir-fry for 2-3 minutes until bright green and slightly tender.
6. Combine Ingredients: Return the beef to the pan. In a bowl, whisk together oyster sauce, brown sugar, and beef broth. Pour this mixture over the beef and broccoli.
7. Thicken Sauce: Cook for an additional 3-4 minutes, allowing the sauce to thicken. You may add a teaspoon of sesame oil for enhanced flavor.
8. Season: Adjust seasoning with salt and pepper to taste.
9. Serve: Serve hot over a bed of cooked rice, garnished with sesame seeds if desired.

These steps will guide you in creating the amazing flavors of Chinese Beef and Broccoli effortlessly!