Dressing: * 8 oz plain low fat yogurt * ¼ cup sour cream * 1/3 cup chopped Major Grey's mango Chutney * 2 tbs. apple cider vinegar * 1 tbs. lemon juice * 1/8 tsp. ground allspice * 1/8 tsp. freshly ground black pepper Salad: * 1 lb deli roast Beef - cut into ¼" slices * 4 cups torn romaine lettuce leaves * 1 large mango - peeled & cut into ¾" cubes * 1 red bell pepper - cut into ¾" pieces