For dressing, in a screw-top jar combine oil, sugar, lemon peel, lemon juice, and salt. Cover and shake well. In a medium bowl place orange and grapefruit sections, onion, and mint. Pour dressing over and toss gently. Cover and refrigerate 2 to 24 hours. To serve, put romaine in a large salad bowl and top with fruit mixture; toss lightly. Serve immediately. Makes 6 to 8 servings. |