Spoon yogurt onto several layers of heavy-duty paper towels. Spread to 1/2-inch thickness. Cover with additional paper towels; let stand 5 minutes. Scrape into a small bowl, using a rubber spatula. Add buttermilk and remaining ingredients; stir well. Cover and chill. Serve over mixed salad greens. Yield: 1-1/2 cups (serving size: 1 tablespoon). Calories 17 (42% from fat), protein 1.3 g, Fat 0.8 g (Sat 0.6g, Mono 0.2g, Poly 0 g), carb 1.2g, Fiber 0 g, chol 3 mg, iron 0 mg, sodium 60 mg, calcium 39 mg salad 46