Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/2  cup           oil -- olive
   3      tablespoons   vinegar -- tarragon
   2      teaspoons     parsley flakes -- dried
     1/2  teaspoon      salt
     1/8  teaspoon      pepper
   1      pound         mushrooms -- fresh, sliced

Preparation:

Combine all ingredients except mushrooms in a large bowl; stir well. Add mushrooms, tossing gently to coat. Chill for about 4 to 6 hours before serving.