Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      tablespoon    vegetable oil
   1      tablespoon    lemon juice
   1      tablespoon    wine vinegar
     1/4  teaspoon      salt
     1/2  teaspoon      coarsely ground pepper
     1/2  teaspoon      dry mustard
     1/8  teaspoon      garlic powder -- or 1 clove garlic
   1      tablespoon    dill pickle -- finely chopped ,
                        -- (up to 2)
  12      ounces        fresh mushrooms -- sliced thin about 4
                        -- 1/2 cups
   6                    lettuce leaves
   2      tablespoons   snipped fresh parsley

Preparation:

Place all ingredients except mushrooms, lettuce, and parsley in a small jar. Cover the jar and shake it well. Drizzle dressing over mushrooms and toss mushrooms gently so that dressing thoroughly coats them. Serve on lettuce leaves and garnish with snipped parsley.