Chop the mushrooms, pork and onions and add to the broth that has been brought to the boil. After steeping for 10 minutes, add the sherry and the spices and thicken the soup with the cornstarch mixed in cold water. Then let it steep for 3 minutes.
Add the whisked egg that is lightly beaten in the soup. Remove the soup from the plate, add the oil and add a little sugar to taste. Serve sprinkled with the chives.