
This beef lo mein is a fast, flavorful noodle stir-fry loaded with tender marinated steak, fresh vegetables, and a savory soy-oyster sauce. It delivers restaurant-style texture and wok-fired flavor at home, making it a reliable weeknight dinner that still feels special.
Slice the flank steak thinly against the grain. In a small bowl, toss the beef with baking soda, cornstarch, soy sauce, and 1 tsp vegetable oil. Let it marinate for 30 minutes to tenderize the meat.
In another bowl, stir together the light soy sauce, oyster sauce, dark soy sauce, sesame oil, salt, sugar, and white pepper until smooth. Set the sauce aside.
If using fresh cooked lo mein noodles, rinse them briefly under hot water to loosen and drain well. If using uncooked noodles, boil according to the package directions until just tender, then drain thoroughly. Prep the garlic, carrot, bell pepper, mushrooms, bamboo shoots, napa cabbage, snow peas, bean sprouts, and scallions so everything is ready before stir-frying.
Heat a wok or large skillet over high heat until very hot. Add 1 tbsp vegetable oil, then spread the beef in a single layer. Sear for about 30 seconds per side until lightly browned but not fully cooked through. Transfer the beef to a plate.
Add the remaining 1 tbsp vegetable oil to the wok. Stir-fry the garlic, carrot, red bell pepper, and mushrooms for about 30 seconds.
Add the bamboo shoots and the white parts of the scallions, and cook for 20 seconds. Add the napa cabbage and stir-fry for another 30 seconds, keeping the heat high so the vegetables stay crisp.
Add the noodles to the wok. Toss gently to combine with the vegetables and separate any clumps.
Pour the Shaoxing wine around the edge of the wok. Toss for 30 seconds, then add the prepared sauce.
Continue stir-frying and tossing until the noodles are evenly coated and the sauce is absorbed. Scrape along the bottom of the wok as needed to keep the noodles from sticking.
Add the snow peas, mung bean sprouts, and the seared beef along with any juices on the plate. Stir-fry just until the beef is cooked through and the vegetables are crisp-tender.
Finish with the green parts of the scallions and toss once more. Taste and adjust with extra soy sauce, oyster sauce, sesame oil, salt, or white pepper if needed. Serve immediately.
For the best texture, keep the heat high and have every ingredient prepped before cooking. Dry sherry can replace Shaoxing wine, and broccoli or snap peas work well if you do not have snow peas. Leftovers keep well in the refrigerator for up to 3 days and reheat best in a hot skillet.




