Soups & Stews
This beef and broccoli recipe made with lau delivers restaurant-quality umami in just 25 minutes—no shortcuts, just precision. The secret lies in the lau, a rich, savory base that transforms tender beef and crisp-tender broccoli into a dish bursting with depth.
I’ve perfected this technique after years of testing, ensuring every bite balances sweetness, saltiness, and that signature wok hei smokiness.
The process starts with high-heat searing of the beef, locking in juices while building a flavorful crust. Broccoli gets just enough time to stay vibrant yet tender, absorbing the lau sauce without turning mushy.
The sauce itself is where the magic happens—lau (a blend of soy, ginger, garlic, and a touch of brown sugar) creates a glossy, clinging coating that clings to every piece of beef and broccoli.
What you’ll end up with is a dish that’s bold yet balanced, with perfectly cooked beef that’s tender but not mushy, broccoli that’s crisp-tender, and a sauce that’s rich without being heavy.
The aroma alone will have everyone gathering around the table, and the first bite delivers on that promise of restaurant-quality flavor at home.
Serve it over steamed jasmine rice or noodles to soak up every last drop of that umami-packed lau sauce. This isn’t just another take on beef and broccoli—it’s a dish that respects tradition while delivering results that feel like a chef’s creation. Let’s get cooking.
Ingredients for beef and broccoli recipe made with lau
Restaurant-quality beef and broccoli starts with these 14 ingredients—simple yet transformative.
| Ingredient | Amount | Notes |
|---|---|---|
| Flank Steak 🥩 | 1 ½ lb | Thinly sliced against grain |
| Broccoli Florets 🥦 | 1 ½ lb | Medium size, cut into bite-sized pieces |
| Light Soy Sauce 🍶 | ½ cup | High-quality brand preferred |
| Dark Soy Sauce 🍶 | ¼ cup | For color depth |
| Fresh Ginger 🌿 | 2 tbsp | Finely grated, aromatic |
| Garlic Cloves 🧄 | 6 cloves | Minced, fresh preferred |
| Brown Sugar 🍯 | 2 tbsp | Light or dark variety |
| Sesame Oil 🫒 | 1 tbsp | Toasted sesame oil for aroma |
| Cornstarch 🌾 | 1 tbsp | For thickening |
| Vegetable Oil 🫒 | 2 tbsp | High smoke point |
| Green Onions 🧅 | 4 whole | Sliced, for garnish |
| Sesame Seeds 🌱 | 1 tbsp | Toasted, for garnish |
| Salt 🧂 | 1 tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ½ tsp | Freshly ground |
The flank steak is non-negotiable for this dish—it needs to be thinly sliced against the grain for tenderness. Look for well-marbled cuts at your local butcher or Costco if you want to save. If you can't find flank, sirloin or ribeye work in a pinch, but slice them extra thin. Broccoli should be fresh and vibrant—avoid the pre-cut florets that turn mushy fast. Trader Joe's has great pre-washed options if you're short on time, but whole heads are better for texture. The soy sauces? Kikkoman or Lee Kum Kee are my go-tos for that authentic umami punch.
No light soy sauce? Double the dark soy sauce—it's richer, but you'll need to adjust the brown sugar slightly. Fresh ginger is ideal, but if you're using dried, reduce to 1 teaspoon and toast it briefly in a dry pan first. The garlic should be minced finely—a food processor makes quick work of this. For the sesame oil, use only the toasted kind—regular sesame oil lacks that nutty depth. Swapping cornstarch? Arrowroot powder works 1:1, but cornstarch gives that classic glossy finish. And if you're out of green onions, scallions or chives do the trick—just use twice the amount.
Store the lau sauce base (soy, ginger, garlic, sugar) in an airtight container in the fridge for up to 5 days—it actually tastes better after flavors meld. Broccoli keeps crispest if blanched ahead and stored in ice water for 24 hours. The cooked beef reheats beautifully—just 5 minutes in a wok with a splash of water. For meal prep, portion the beef and broccoli separately; toss everything together when ready to eat. The sauce will thicken more as it sits, so thin with a splash of water or broth when reheating.
Why You'll Love This Recipe
- Fewer Ingredients, Bigger Flavor: I swear by this trick—just three sauces (light soy, dark soy, and a splash of oyster sauce if you’re feeling fancy) plus ginger, and you’ve got that umami-packed punch. The dark soy gives it that glossy, caramelized crust on the beef without extra effort.
- Weeknight Hero: Flank steak slices in 10 minutes, broccoli chopped while the pan heats—no fancy searing or braising. Honestly, the only real step is letting the beef marinate in the lau sauce while you steam the broccoli, and even that’s optional.
- Lau Sauce Magic: That ginger-lau sauce? It’s the secret weapon. The ginger brightens the richness of the beef while the fermented funk of lau adds depth—like a little umami hug. Trust me, it’s the kind of flavor that makes you want to eat it straight from the wok.
- Leftovers That Don’t Suck: This dish actually tastes better the next day. The broccoli stays tender, the beef gets even more tender, and the sauce thickens into a glossy, clingy glaze. Pack it for lunch or freeze it—no sad, dry takeout leftovers here.
Step-by-step instructions for lau's signature beef and broccoli
Here's Lau's authentic method for restaurant-quality beef and broccoli in just 25 minutes.
Prepare the Marinade and Slice the Beef
In a small bowl, combine the 0.5 cup light soy sauce, 0.25 cup dark soy sauce, 2 tbsp brown sugar, 1 tbsp sesame oil, 1 tsp salt, and 0.5 tsp black pepper. Mix thoroughly until the sugar dissolves completely—this creates a balanced umami-sweet marinade that tenderizes the beef.
While the marinade sits, slice the 1.5 lb flank steak thinly against the grain into ¼-inch thick strips. This ensures each bite is fork-tender. Place the beef strips in a resealable plastic bag with the marinade, seal tightly, and massage the marinade into the meat. Let it marinate for at least 15 minutes (or up to 1 hour in the refrigerator) to maximize flavor penetration.
Prep the Broccoli and Aromatics
Cut the 1.5 lb broccoli florets into bite-sized pieces, ensuring each floret is uniform in size for even cooking. Trim the tough stems and discard. In a separate bowl, combine the 2 tbsp finely grated fresh ginger and 6 minced garlic cloves. This aromatic blend forms the flavor foundation of Lau's signature sauce.
Slice the 4 whole green onions diagonally into ¼-inch thick pieces, separating the white and green parts. Toast the 1 tbsp sesame seeds in a dry skillet over medium heat for 1-2 minutes until fragrant and lightly golden. Set aside for garnish—this adds nutty depth to the dish.
Stir-Fry the Beef to Perfection
Heat a wok or large skillet over high heat until it's smoking hot. Add the 2 tbsp vegetable oil and swirl to coat the bottom evenly. Working in batches if needed, add the marinated beef strips and stir-fry for 2-3 minutes until they develop a deep golden-brown crust. Remove the beef and set aside on a plate.
In the same wok, add the prepared broccoli florets and stir-fry for 3-4 minutes until they turn bright green and slightly blistered. Add the ginger-garlic mixture and stir for 30 seconds until fragrant. The high heat ensures the broccoli retains its vibrant color and crisp-tender texture.
Create the Signature Sauce
Return the beef to the wok and pour in the marinade from the plastic bag. Stir to combine, letting the sauce simmer for 1 minute to coat the beef and broccoli. In a small bowl, whisk together the 1 tbsp cornstarch with 2 tablespoons water until smooth. This slurry is essential for achieving Lau's signature glossy, velvety sauce.
Slowly pour the cornstarch slurry into the wok while stirring constantly. The sauce will thicken dramatically within 30-60 seconds. Taste and adjust seasoning if needed—Lau's version balances sweet, salty, and umami perfectly. The sauce should coat the back of a spoon and cling beautifully to the beef and broccoli.
Finish and Serve with Authentic Garnishes
Remove the beef and broccoli from the wok and transfer to a serving platter. Drizzle any remaining sauce over the top for maximum flavor impact. Garnish with the toasted sesame seeds and sliced green onions, adding both visual appeal and fresh, bright contrast to the rich dish.
Serve immediately over steamed jasmine rice or noodles to soak up every last drop of that umami-packed sauce. The beef should be tender yet slightly chewy, the broccoli crisp-tender with vibrant color, and each bite should deliver a perfect balance of sweet, salty, and aromatic flavors that make this Lau's signature dish.
Pro Tips For Making Beef And Broccoli Recipe Made With Lau
- Slice Steak Against Grain: Flank steak’s tough fibers run parallel to the grain—cutting perpendicular to them shortens the strands and keeps the meat tender. Use a sharp knife and slice thinly (about ¼-inch thick) before cooking, or you’ll end up with chewy strips that fight back.
- Blanch Broccoli First: Toss broccoli florets in boiling water for 30 seconds before stir-frying—this softens them just enough to cook through without turning mushy. Drain well and pat dry; wet florets steam instead of sear, and you’ll end up with sad, limp greens.
- Balance the Sauce: Light soy sauce gives flavor, dark soy sauce adds color, but too much of either can make the dish taste like a salt lick. Start with 1 tablespoon light and ½ teaspoon dark per 12 oz steak, then adjust—your future self will notice the difference.
- Let the Ginger Marinate: Grate fresh ginger fine and mix it directly into the sauce with the soy sauces—let it sit for 10 minutes before using. This extracts more flavor than just tossing it in at the end, and it won’t turn bitter from high heat. (Yes, even if you’re impatient like me.)
Flavor customization for these flavors
Sweet Heat Balance
Adjust the brown sugar to white sugar ratio for a sharper sweetness—try 1 tbsp white sugar instead of brown for a cleaner flavor. For heat lovers, add ½ tsp chili flakes or 1 tsp sriracha to the sauce base.
If you prefer smoky depth, swap ½ tsp smoked paprika for the sesame oil in the marinade. 🌶️
Umami Boosters
For extra umami, stir in 1 tbsp oyster sauce or 1 tsp fish sauce with the cornstarch slurry. If you love mushrooms, add ½ cup sliced shiitake with the broccoli—they absorb the lau sauce beautifully. A splash of 1 tsp mirin in the marinade adds brightness and complexity. 🍄
Protein Swaps
Replace beef with chicken thighs for a lighter version—marinate them for 20 minutes and cook for 4-5 minutes per side. For a seafood twist, use shrimp (peeled and deveined) and reduce cooking time to 2 minutes to avoid overcooking.
Tofu works too—press and cube 1 lb firm tofu, pan-fry until crispy, then toss in the lau sauce. 🍤
Vegetable Variations
Swap broccoli for bok choy or snow peas—both cook faster and add a different texture. For heartier meals, add bell peppers or snap peas with the broccoli. If you love crunch, stir-fry water chestnuts or bamboo shoots alongside the veggies. 🥦
Sauce Thickness Control
For a thicker sauce, increase the cornstarch to 1.5 tbsp. Need it lighter? Reduce to ½ tbsp and add 1 tbsp water to the slurry.
If the sauce splits, whisk in 1 tsp cold water to smooth it out. For a glossier finish, add ½ tsp xanthan gum to the slurry. 💧
Regional Lau Twists
For a Cantonese-style version, add 1 tsp Shaoxing wine to the marinade. A Sichuan-inspired take includes 1 tsp doubanjiang (chili bean paste) and ½ tsp Sichuan peppercorns (toasted and crushed).
For a Japanese fusion, swap soy sauces for 1 tbsp mirin and 1 tsp sake, then add 1 tsp grated daikon to the sauce. 🗺️
Nutrition facts
Frequently asked questions
What exactly is "lau" in this beef and broccoli recipe?
"Lau" refers to the signature sauce base that combines soy sauces, ginger, garlic, and brown sugar to create that perfect umami-sweet balance. It's essentially a flavorful marinade/sauce hybrid that tenderizes the beef while building depth. Think of it as the secret weapon behind the dish's restaurant-quality taste.
Can I use a different cut of beef instead of flank steak?
For best results, choose tender cuts like sirloin or ribeye—just slice them ¼-inch thick against the grain to ensure tenderness. Avoid tougher cuts like chuck, as they won't cook through properly in the quick stir-fry method. If using chicken, opt for thighs over breast for juiciness.
Why does my broccoli turn mushy when stir-frying?
Overcooking is the #1 culprit! Broccoli should cook for just 3-4 minutes over high heat—it's done when bright green and slightly blistered. Crowding the pan also steams instead of sears. For extra crisp-tender results, blanch the broccoli for 1 minute in boiling water first, then finish in the wok.
How do I make this dish spicier or sweeter?
For heat, add ½ tsp chili flakes or 1 tsp sriracha to the sauce. For more sweetness, increase the brown sugar to 3 tbsp or swap for white sugar. Pro tip: Balance heat with extra sesame oil (½ tsp) to mellow the spice. Taste as you go—you can always adjust!
Can I make this ahead of time for meal prep?
Yes! Cook the beef and broccoli separately, then store in airtight containers for up to 3 days. Reheat in a wok with a splash of water for 5 minutes to restore the sauce's gloss. For best texture, add fresh broccoli when reheating. The lau sauce actually improves overnight—just thin with water if too thick.