Soak the black mushrooms in warm water for 15 minutes. Remove the stems. Place in a bowl. Add the pounded scallion, ginger, star anise, soy sauce and soup stock. Steam for about 15 minutes.
Place asparagus in a bowl. Add ½ cup of soup stock. Steam for about 10 minutes until hot.
Cook the green vegetables in boiling water about 30 seconds. Remove and p