Start by identifying the grain of the beef. Slicing against it is crucial, as it helps keep the meat tender. Aim for slices thick enough to maintain structure, around a quarter inch. Next, place your beef in a bowl of water to wash away any residual blood—this is essential to avoid a gray tinge in your final dish. Gently knead the meat in the water, then transfer it to a strainer to drain thoroughly.

In a separate bowl, mix a teaspoon of baking soda with the beef. This is a classic Chinese technique to enhance tenderness. To this, add the oyster sauce, light soy sauce, water, cornstarch, white pepper, sugar, cooking wine, and a drizzle of cooking oil. Stir until you have a smooth marinade.

Introduce your sliced beef to this marinade and massage it well to ensure every piece is coated. Let the beef sit for about 30 minutes. This resting time is crucial for allowing the flavors to penetrate and the meat to tenderize.

While the beef is marinating, get on with the veggies. Cut the broccoli into bite-sized pieces, ensuring the main stems are included, as they are delicious and nutritious. Slice the carrot into thin slivers, allowing for a colorful presentation. Chop the ginger and scallions, then mince the garlic finely. Gather your ingredients together so they’re ready to go.

In a small bowl, combine all the sauce ingredients: oyster sauce, light and dark soy sauces, water, cooking wine, sugar, cornstarch, and white pepper. This should be well mixed until uniform.

Fill a medium pot with water, bring it to a boil, then add a splash of oil and a pinch of salt. This ensures your broccoli retains that vibrant green color. Cook the florets for about 2 minutes for a nice crunch, or longer if you prefer a softer texture. Drain and rinse with cool water if you’re not cooking them immediately to stop the cooking process.

Take the marinated beef and drizzle on some cooking oil, ensuring each piece is lightly coated. Heat your wok over high heat, adding cooking oil to coat the surface. Once hot, introduce the beef and cook for about 30 to 60 seconds, browning the meat. Flip each piece until mostly cooked through but still a bit red inside. Remove the beef from the wok and set aside.

In the same wok, add a bit more oil if needed. Toss in the minced garlic and ginger, sautéing for about 20 to 30 seconds until fragrant. Add the scallions and carrot slices, cooking for another half a minute. Finally, introduce the blanched broccoli, and give everything a nice stir. Cook for another 30 to 40 seconds to warm through.

Now, return the beef to the stir-fry mix. Combine everything well and cook for an additional 30 to 45 seconds. If your broccoli has absorbed all the liquid, feel free to add a tablespoon of water to the mix for moisture.

Pour the sauce over the stir-fry and mix continuously for about a minute. Drizzle in the sesame oil and toss everything to coat the veggies and beef nicely. For that restaurant-quality finish, you might add a touch more oil to make it glisten beautifully. Taste to adjust seasoning, then serve warm!