Soups: Fresh Mushroom/Shrimp Bisque (Serves 4)

1 pound fresh mushrooms, sliced
2 1/2 t salt, divided
1/4 cup chopped fresh onion
1/4 cup melted butter
1/4 cup flour
dash pepper
2 1/2 cups milk
1/2 cup whipping cream
2 cups chopped cooked shrimp (12 oz)
Cook mushrooms in 1 1/2 cups water and 1 t salt in covered pan for 10 minutes.  Drain, reserving liquid.  Set mushrooms aside.  Saute onion in butter until tender.  Blend in flour, pepper, and remaining salt.  Stir in reserved mushroom liquid and milk.  Cook over med heat, stirring constantly until mixture thickens and reaches boiling point.  Remove from heat.  Stir in mushroom, cream, shrimp.  Serve warm or chilled.