½ cup plain low-fat yogurt ⅓ cup buttermilk 3 tablespoon freshly grated parmesan cheese 3 tablespoon finely chopped red onion 3 tablespoon light mayonnaise dressing or salad dressing 2 tablespoon snipped fresh parsley 1 tablespoon white wine vinegar or lemon juice 1 clove garlic, minced ¼ teaspoon salt ⅛ teaspoon black pepper
