Directions: Dissolve the bouillon in the boiling water and set to the side.
Melt butter in saucepan.
Combine flour,mustard,and pepper.
Stir into melted butter Cook till smooth& Creamy.
Stir in mushrooms and Bouillon slowly.
Cook on very low heat for about 35 to 40 minutes.
Slowly heat cream in a small pan,but do not boil.
Add cream and sherry to soup and stir till well blended.