MIXED GREENS WITH GRAPES AND FETA For dressing: 1/4 cup extra-virgin olive oil 2 tablespoons red-wine vinegar 1/4 teaspoon salt, or to taste Freshly ground pepper to taste Whisk (or shake) oil, vinegar, salt and pepper in a small bowl (or jar) until blended. For the salad: 8 cups salad greens (5 ounces) 1 head radicchio, thinly sliced 2 cups halved seedless grapes (about 1 pound), preferably red and green 3/4 cup crumbled feta or blue cheese Just before serving, toss greens and radicchio in a large bowl. Drizzle the dressing on top and toss to coat. Divide the salad among eight plates. Scatter grapes and cheese over each salad; serve immediately. Serves 8. Nutrition information per serving: 135 calories, 0 grams fat (3 grams sat, 6 grams mono), 13 mg cholesterol, 9 grams carbohydrates, 3 grams protein, 1 gram fiber, 239 mg sodium, 187 mg potassium.