Parboil fresh egg noodles for 3 minutes. Rinse with cold water and drain. Add sesame oil, and mix to keep from sticking.
Mix cornstarch, light soy sauce, and dry sherry in shallow bowl. Slice beef into 1/8-inch strips across the grain. Marinate in mixture for 15 minutes.
Sauce: Mix cornstarch, chicken stock, soy sauce, and oyster sauce together. Set aside. Have a pot of hot water ready.
Heat wok. Carefully add 2 tablespoons oil. Add garlic, and brown. Discard garlic chunks. Add beef and add salt to taste. Stir until 3/4 done. Add sauce mixture and stir until thickened. Add green onions and sesame oil. Mix well and keep warm. Drop noodles into hot water. Stir for a minute to heat. Drain well.