3/4 cup mayonnaise
 3/4 cup sour cream
 1/3 cup finely chopped fresh sorrel or arugula
 2 tablespoons chopped fresh tarragon or 1 teaspoon dried, crumbled
 2 tablespoons chopped fresh chives or green onion tops
 1 tablespoons chopped fresh parsley
 1 tablespoons fresh lemon juice
 1 garlic clove, pressed (or use 1/2 teaspoon garlic powder)
 Mix all ingredients in a medium bowl.  Season with salt and pepper. Cover
 and chill at least four hours.  (Can be prepared 1 day ahead. Keep
 refrigerated).