Green Goddess Salad Dressing

This classic salad dressing includes mayonnaise, anchovies, vinegar, green onion, garlic, parsley, tarragon and chives. It can be prepared in a blender or food processor and is good served as a dressing for steamed artichokes, a seafood salad, or as a sauce over broiled fish. (If you don't have fresh tarragon, you can use 1/4 teaspoon dried, instead.)