From scratch! Bash black beans, garlic, chili and ginger to smithereens, add a little peanut oil to make a paste. In a wok, or large frying pan, stir fry spring onion, black bean paste, chicken breast pieces, red pepper, mushroom and green beans. Boil noodles for 4 minutes, drain. Stir fry/ simmer chicken mixture in a splash water, for about 10 minutes, add soy sauce and rice wine, thicken sauce with slaked cornflour. Stir in noodles, sprinkle with sesame seeds and serve... feed to admiring victim. Who was mostly complimentary except apparently there were too many mushrooms.