Soups & Stews
This beef and broccoli recipe made with lau delivers restaurant-quality silkiness in every bite, thanks to a sauce that clings perfectly to tender beef and crisp-tender florets.
The secret lies in the balance of fermented black beans, ginger, and soy sauce—creating a rich, umami-packed glaze that transforms simple ingredients into a dish worthy of a wok master. I developed this version after years of experimenting with regional variations, ensuring the sauce stays velvety without turning gluey.
What sets this recipe apart is the two-stage cooking process: first searing the beef in batches to render fat and develop flavor, then finishing with broccoli and sauce in the same wok.
This method preserves the beef's natural juices while allowing the sauce to thicken just enough to coat everything evenly. The result? A dish where every forkful delivers perfectly tender beef, vibrant green broccoli, and a sauce that sticks without overwhelming.
By the time you're plating, you'll have a dish that's both elegant and approachable—ideal for weeknight dinners or special occasions. The aromatic ginger and fermented bean notes create depth, while the soy base keeps it familiar yet sophisticated.
Serve over steamed rice to soak up every last drop of that clinging sauce, or pair with crusty bread to mop up the rich flavors.
This recipe works beautifully for meal prep too—just store components separately and reheat gently to maintain texture. The sauce can be made ahead and reheated with a splash of water, ensuring you're always just minutes away from a restaurant-quality meal.
Let's get cooking with this perfect balance of technique and flavor.
Ingredients for beef and broccoli recipe made with lau
Silky sauce, tender beef, and vibrant broccoli—this recipe delivers restaurant-quality flavor at home.
| Ingredient | Amount | Notes |
|---|---|---|
| Flank Steak 🥩 | 1 ½ lb | Thinly sliced against grain |
| Broccoli Florets 🥦 | 2 cups | Fresh, medium-sized florets |
| Fermented Black Beans 🫘 | ½ cup | Rinsed and drained |
| Ginger Root 🧄 | 2 tbsp | Freshly grated |
| Garlic Cloves 🧄 | 4 cloves | Minced finely |
| Light Soy Sauce 🥄 | ½ cup | Kikkoman preferred |
| Dark Soy Sauce 🥄 | 1 tbsp | For depth of color |
| Sesame Oil 🫒 | 1 tbsp | Toasted sesame preferred |
| Cornstarch 🌾 | 1 tbsp | For sauce thickening |
| Neutral Oil 🫒 | 2 tbsp | Avocado or vegetable oil |
| Green Onions 🧅 | 3 whole | Sliced thin for garnish |
| Sesame Seeds 🌾 | 1 tsp | Toasted lightly |
| Salt 🧂 | 1 tsp | Kosher or sea salt |
| White Pepper 🌶️ | ¼ tsp | Freshly ground |
The flank steak is your secret weapon here—look for cuts with good marbling at Whole Foods or your local butcher. Thinly slicing it against the grain ensures tender bites. Kikkoman soy sauce is the gold standard for this dish, but any light soy will work. Fermented black beans add that signature umami depth; Asian markets carry them in jars or cans, but rinse them well to remove excess salt. Fresh ginger and garlic are non-negotiable—they make all the difference in that aromatic sauce base. If you're short on time, jarred minced garlic works, but freshly grated ginger is worth the extra minute.
No fermented black beans? Substitute with 1 tbsp of black bean paste or even a splash of fish sauce (though it won't be identical). Running out of sesame oil? Toasted peanut oil adds a similar richness. The cornstarch is key for that velvety sauce—don't skip it. For the broccoli, baby broccoli florets work perfectly if you prefer smaller pieces. And if you're worried about the sauce turning gluey, remember the two-stage cooking process: sear the beef first, then add the broccoli and sauce at the end. That's what keeps everything perfectly coated without overcooking.
Store the cooked beef and broccoli separately in airtight containers for up to 3 days—reheat gently in a wok or skillet with a splash of water. The sauce can be made ahead and reheated with an extra 1 tsp of water to restore its silky texture. For meal prep, portion the sauce into small containers and freeze for up to 3 months. When reheating, add it to the wok last to prevent curdling. Garnish with toasted sesame seeds and green onions right before serving—those fresh elements make all the difference.
Why You'll Love This Recipe
- One-Pan Magic: I swear by this—just sear the flank steak, toss in the broccoli and fermented black beans, then let the ginger and garlic work their magic. No dirty dishes, no stress, just flavor that sticks to every bite.
- Umami Bomb: That fermented black bean paste? It’s the secret weapon. Deep, funky, and just sweet enough—like a slow-cooked soy sauce but with actual depth. The steak stays tender while the broccoli gets that perfect char, and the ginger cuts through everything with a bright snap.
- Leftover Hero: Between us, this dish begs to be made extra. The flavors only get better the next day—steak reheats like a dream, and the broccoli stays crisp if you blanch it first. Pack it for lunch or freeze portions; it’s my go-to for lazy Wednesdays.
- Budget Flex: Flank steak stretches far here, and fermented black beans add richness without breaking the bank. Honestly, I buy them in bulk because they make everything taste like a restaurant dish. Plus, broccoli’s cheap, so you’re basically getting a fancy meal for half the price.
Step-by-step instructions for beef and broccoli with lau sauce
Master the technique behind a sauce that clings perfectly to every strand of beef and floret.
🔪 Step 1: Prep and Marinate the Flank Steak
Slice the 1.5 lb flank steak thinly against the grain into ¼-inch strips. This ensures tender bites that cook quickly and evenly. Transfer the sliced steak to a bowl and add the 0.5 cup light soy sauce, 1 tbsp dark soy sauce, 1 tbsp sesame oil, and 1 tsp salt. Toss gently to coat, then let it marinate for 15-20 minutes at room temperature. This step infuses flavor deep into the meat and prevents it from drying out during cooking.
While the steak marinates, rinse and drain the 0.5 cup fermented black beans thoroughly. Pat them dry with a paper towel to remove excess moisture, which helps them crisp up nicely later. The black beans add a subtle umami depth that balances the bright soy flavors. Keep them in a small bowl until ready to use.
🍳 Step 2: Sear the Beef and Broccoli
Heat a large wok or skillet over high heat until it's screaming hot. Add 1 tbsp neutral oil and swirl to coat the surface. Working in batches to avoid crowding, add half of the marinated steak strips and sear for 1-2 minutes per side until they develop a deep golden-brown crust. The high heat is crucial here—it creates the signature caramelized flavor. Transfer the cooked beef to a plate and repeat with the remaining strips.
In the same pan, add another 1 tbsp neutral oil and toss in the 2 cups broccoli florets. Stir-fry for 2-3 minutes until they brighten in color and just begin to soften at the edges. Don't overcook them—they should still have a slight bite. Remove the broccoli and set it aside with the beef. This quick cooking preserves their vibrant green color and crisp texture.
🍳 Step 3: Build the Signature Lau Sauce
Return the pan to high heat and add the 2 tbsp freshly grated ginger root and 4 cloves minced garlic. Sauté for 30 seconds until fragrant—this releases their essential oils and forms the aromatic base of the sauce. Be careful not to let the garlic burn; it should just turn golden around the edges.
Pour in the 0.5 cup light soy sauce and 1 tbsp dark soy sauce, scraping up any browned bits from the bottom of the pan. These bits, called fond, are packed with flavor. Let the sauce simmer for 1 minute until it slightly reduces. Then, whisk together the 1 tbsp cornstarch with 2 tablespoons water to create a slurry. Slowly pour this into the pan while stirring constantly.
🥘 Step 4: Combine and Finish
Return the seared beef and broccoli to the pan, tossing everything together until fully coated in the sauce. Add the 0.5 cup drained black beans and stir to distribute them evenly. Cook for an additional 1-2 minutes until the sauce thickens to a glossy, lacquer-like consistency that clings to every ingredient. The sauce should coat the back of a spoon but still remain silky rather than gluey.
Remove from heat and stir in the 3 whole green onions, sliced thin. Sprinkle with 1 tsp toasted sesame seeds and 0.25 tsp freshly ground white pepper. The green onions add a fresh contrast to the rich sauce, while the sesame seeds provide a nutty finish. Serve immediately over steamed rice to soak up every last bit of that velvety sauce.
Pro Tips For Making Beef And Broccoli Recipe Made With Lau
- SEAR THE STEAK FIRST: The moment you toss in the broccoli and fermented black beans, the heat drops. Get that flank steak screaming hot in a dry pan for 2-3 minutes per side before adding anything else—it builds flavor and keeps the meat tender. I used to rush this, and the dish always tasted flat afterward.
- SLICE AGAINST THE GRAIN: Flank steak’s tough when chewed with the grain. Cut it thin (¼-inch) and slice perpendicular to the grain—this shortens the muscle fibers and makes every bite melt in your mouth. Use a sharp knife, or you’ll crush the meat instead of slicing it clean.
- SOAK THE FERMENTED BEANS: Fermented black beans (lau) can be salty and tough if not prepped right. Rinse them well, then soak in warm water for 10 minutes before adding to the pan. This mellows their sharpness and keeps them from turning mushy when cooked.
- STIR THE BROCCOLI FAST: Broccoli’s done in 2 minutes—any longer and it turns to sad, limp florets. Toss it into the pan right after the steak comes out, then stir like you’re trying to win a cooking contest. High heat and constant movement guarantee crisp-tender florets, not soggy ones.
Creative variations of this dish
Sichuan Spicy Twist
Transform this dish into a fiery Sichuan-style version by adding 1 tbsp Sichuan peppercorns toasted and ground, plus 1 tsp chili bean paste to the sauce. The peppercorns create that signature numbing heat, while the chili bean paste adds depth.
I like to finish with thinly sliced red chili peppers and a sprinkle of scallions for extra drama. Serve with extra rice to balance the heat—this version is a crowd-pleaser at dinner parties. 🌶️
Thai-Inspired Sweet Heat
For a Thai-inspired take, replace the fermented black beans with 2 tbsp fish sauce and add 1 tbsp palm sugar to the sauce. Stir in 1 tsp shrimp paste when building the sauce base for that unmistakable Thai aroma.
Garnish with cilantro leaves and crushed peanuts for texture. The sweetness balances the soy perfectly, creating a dish with bright, tropical notes. 🌏
Creamy Garlic Version
Want a richer sauce? Swap out half the soy sauce for ½ cup coconut milk and add 2 tbsp hoisin sauce for depth. Stir in 1 tbsp cornstarch slurry at the end to thicken it to a creamy consistency.
Top with extra green onions and a drizzle of chili oil for a luxurious twist that feels like a restaurant special. This version pairs beautifully with jasmine rice or noodles. 🥥
Vegetarian Adaptation
Skip the beef entirely and use 1 lb extra-firm tofu pressed and cubed, or 1 lb shiitake mushrooms sliced. Marinate the tofu in the same soy-ginger mixture and sear until golden.
The texture holds up perfectly when tossed with broccoli and sauce. For extra protein, add ½ cup edamame to the stir-fry. This version keeps all the umami richness without meat. 🌱
Meal Prep Hack
Make this dish ahead by cooking the beef and broccoli separately, then storing them in airtight containers. Keep the sauce in a separate jar—reheat it with 1 tsp water before combining everything.
When ready to serve, toss the beef and broccoli in the wok with the reheated sauce for just 1-2 minutes to restore that clinging texture. This method keeps the broccoli crisp and the sauce silky. Perfect for busy weeknights! ⏰
Nutrition facts
Frequently asked questions
What's the best cut of beef for this recipe?
Use flank steak or sirloin—both slice thinly against the grain for tender results. The fat marbling in flank steak adds flavor, while sirloin offers a leaner option. Avoid tougher cuts like chuck; they won't become tender enough in this quick stir-fry.
Can I substitute fermented black beans?
Yes! Use 1 tbsp black bean paste or 2 tbsp fish sauce for umami depth. For texture, add 1 tsp toasted sesame seeds instead. The sauce will still cling beautifully, though the flavor profile will shift slightly.
Why does the sauce turn gluey?
Overcooking or adding too much cornstarch causes this. Keep heat high when combining sauce and ingredients, and stir constantly. For reheating, add 1 tsp water to restore silkiness. The sauce should coat a spoon but remain glossy, not thick.
How do I make this spicier?
Add ½ tsp red pepper flakes or 1 tsp chili crisp to the sauce. For Sichuan heat, include 1 tsp chili bean paste when building the base. Balance with extra rice to soak up the heat.
Can I use frozen broccoli?
Fresh broccoli works best for vibrant color and texture, but frozen florets will do in a pinch. Thaw and pat dry thoroughly before cooking to prevent excess moisture. Stir-fry for 1-2 minutes less than fresh to avoid mushiness.