1 tsp. vinegar
1 lg. clove garlic
4 whole green onions
2 sprigs parsley
1 tsp. dried tarragon
3 tbsp. mayonnaise
1 c. buttermilk

Blend all ingredients, except 3/4 cup of the buttermilk in a blender until smooth. Then stir in the remaining buttermilk. Makes about 1 cup.