1/2 c. plus 3 tbsp. plain nonfat yogurt
1/4 c. fat-free mayonnaise
1 tbsp. grated Parmesan cheese
1 tbsp. minced green onions
1 to 1 1/2 tsp. freshly green pepper
1 1/2 tsp. cider vinegar
1 tsp. lemon juice
1/2 tsp. low-sodium Worcestershire sauce

Combine all ingredients in a small bowl; stir well. Cover and chill thoroughly. Serve with salad greens.

Makes 1 cup.