Heat the oil in the wok, fry the pressed garlic, ginger and ham while stirring for approx. 1 min., Remove and set aside. Fry the leek and Chinese cabbage in the wok for approx. 5 minutes until al dente, season with salt and pepper. Cook the pasta according to the instructions on the packet for approx. 4 minutes and drain. Mix the stock and soy sauce with the cornstarch until smooth and add to the vegetables. Bring the ham to the boil briefly and stir well. Serve with the pasta.