Cook the noodles

• Boil the lo mein noodles in salted water until just tender
• Drain and rinse under cold water, then toss with a little sesame oil

Mix the sauce

• Whisk the soy sauce, oyster sauce, sesame oil and brown sugar in a bowl

Sear the beef

• Heat the vegetable oil in a wok over high heat
• Add the beef and sear until browned, then set aside

Stir-fry the vegetables

• Add the garlic and ginger to the wok and stir-fry until fragrant
• Add the carrot, bell pepper and green onion and stir-fry until crisp-tender

Combine and toss

• Return the beef to the wok with the noodles
• Pour in the sauce and toss everything together over high heat until coated and hot

Serve

• Plate the lo mein and top with extra green onion