If you love simple Asian stir-fry dishes that are packed with flavor and take less than 30 minutes to cook, this Stir-Fried Beef With Choy Sum will become one of your go-to meals.
It combines juicy slices of beef with crisp, fresh choy sum (Chinese flowering cabbage), creating a delicious and nourishing dish perfect for weeknight dinners.

This version uses clean, everyday ingredients and a quick marinating method that keeps the beef incredibly tender and flavorful. Serve it with steamed rice or noodles for the perfect complete meal.

⭐ Why You’ll Love This Beef Stir-Fry

• Fast and easy: Ready in under 25 minutes.

• Tender beef: A light coating of starch locks in moisture.

• Crisp greens: Choy sum adds freshness, texture, and vibrant color.

• Family-friendly: Mild, clean flavors everyone can enjoy.

• Perfect for meal prep: Stays juicy even when reheated.

Ingredients You’ll Need

For the Beef

• 200g beef (sirloin, tenderloin, flank steak, or any tender cut), thinly sliced

• 1 tbsp soy sauce

• 1 tbsp light soy sauce

• A pinch of salt

• White pepper, to taste

• 1 tbsp cornstarch (or potato starch)

For the Vegetables

• 300g choy sum (or substitute with bok choy or Chinese broccoli)

• 2 cloves garlic, minced

• A small piece of ginger, cut into thin strips (optional)

• A little red bell pepper for color (optional)

Other

• Cooking oil, as needed

• Salt, to taste

How to Make Stir-Fried Beef With Choy Sum

Step 1 — Slice and Marinate the Beef

Cut the beef against the grain into thin, even slices.
Place the slices into a bowl and add light soy sauce, regular soy sauce, white pepper, a small pinch of salt, and the cornstarch.
Mix well and let it rest for 15–20 minutes.
The starch helps the beef stay tender and silky once cooked.

Step 2 — Prepare the Choy Sum

Wash the choy sum thoroughly and remove any tough leaves or thick ends.
Chop into medium-sized pieces.
Blanch briefly in boiling water with a pinch of salt for 1–2 minutes, just until bright green.
Drain and set aside.

Step 3 — Prep the Aromatics

Chop the garlic and slice the ginger if using.
These aromatics give the stir-fry its signature fragrance.

Step 4 — Stir-Fry the Beef

Heat a wok or pan over medium-high heat and add cooking oil.
When the oil is hot, add the garlic and ginger and stir until fragrant.
Add the marinated beef and stir-fry quickly.
Once the beef changes color (about 1 minute), remove it from the pan.
This keeps the meat tender and prevents overcooking.

Step 5 — Stir-Fry the Choy Sum

Add a little more oil if the pan looks dry.
Add the blanched choy sum and stir-fry with a small pinch of salt.

Step 6 — Combine Everything

Return the beef to the wok and stir-fry with the choy sum for 2–3 minutes.
Everything should be evenly coated, hot, and flavorful.
Finish with a light sprinkle of white pepper.

Serve immediately.

Tips for the Best Results

• Slice beef thinly to keep it tender and fast-cooking.

• Do not overcook—high heat and speed are key to juicy beef.

• Blanching the greens keeps them bright and crisp.

• Use fresh aromatics for the deepest flavor.

Serving Ideas

• Serve over steamed jasmine rice

• Pair with noodles or fried rice

• Add mushrooms or bell peppers for extra flavor and color