Place the drained, cooked bow ... grapes, tuna and walnuts to the bowl. Stir the yogurt into the salad, mixing well to moisten the salad. Arrange the lettuce leaves on 2 or 3 ... 2 or 3 servings.
Whisk together red wine vinegar, ... thoroughly and tear lettuce. Arrange on 4 salad plates and crumble blue cheese ... with coarsely chopped walnuts. Drizzle approximately 1 tablespoon ... each serving. Serves 4.