1/2 c. lowfat plain yogurt
1/4 c. mayonnaise
1/4 c. chopped parsley leaves
1 tbsp. white wine vinegar
1 tbsp. grated onion
1 tbsp. drained chopped capers, optional
1 tbsp. chopped chives
1/2 tsp. crumbled dried leaf tarragon

Whisk together yogurt, mayonnaise, parsley, vinegar, onion, capers if using, chives and tarragon in small bowl. Cover and refrigerate until ready to use.