Boil the cleaned duck till almost done, with a bamboo skewer make several small holes in
the breast of the duck.
Soak Chinese caterpillar fungus in tepid water till soft, then put inside the duck.
Put the duck into a pot, add salt, scallion, ginger, cooking wine and duck soup, tightly
seal the pot and steam for 3 hours, pick out the scallion and ginger, add MSG and pepper.
