8 to 12 ounces flank steak (you can also substitute a different cut of steak)
For the Marinade
2 tablespoons oyster sauce
1 1/2 teaspoons cornstarch
For the Noodles
8 ounces lo mein noodles (or spaghetti in a pinch)
1/4 cup sesame oil
1 carrot (shredded)
1 clove garlic (minced)
1/2 cup Chinese cabbage (shredded)
2 scallions (chopped; reserve some for garnish)
1 teaspoon sugar
2 teaspoons soy sauce (plus more to taste if you prefer)