Beef Lo Mein(Noodles)

Ingredients:
1 pound flank steak, cut in half lengthwise, then sliced across the grain in thin slices
3 tablespoons soy sauce
2 tablespoons Chinese rice wine or dry sherry
2 teaspoons cornstarch
2 tablespoons oyster sauce
1/2 teaspoon sugar
1/2 pound fresh Chinese egg noodles (lo mein noodles)
1 tablespoon sesame oil
4 tablespoons oil, divided
2 carrots, cut julienne
8 leaves Chinese cabbage or romaine lettuce, cut in crosswise shreds
1 small (4-ounce) can sliced mushrooms, drained

Directions:
Mix beef with 2 tablespoons soy sauce, 1 tablespoon Chinese rice wine or sherry, and the cornstarch. Let stand 20 minutes. Combine remaining soy sauce and rice wine with oyster sauce and sugar. Set aside.
Bring a large pot of water to a boil. Add noodles, stirring to separate. Cook about 2 minutes, until al dente.
Drain, rinse with cold water, and toss with sesame oil. Set aside.
Heat 1 tablespoon oil in a wok. Add carrots and stir-fry 1 minute. Add shredded cabbage or lettuce and mushrooms and stir-fry 1 minute longer. Remove.
Heat another tablespoon of oil in the wok. Add beef mixture and stir-fry until browned, about 2 minutes. Remove.
Wipe out wok. Heat remaining 2 tablespoons oil in wok. Add noodles and stir-fry until they are heated through.
Stir in vegetables and beef.
Add sauce and stir-fry to mix well.