Cos Lettuce With Yogurt Dressing

1 Cos lettuce, trimmed, leaves torn
3-4 tablespoons plain low-fat yogurt
1 clove garlic, peeled and crushed
1 teaspoon tomato pur&
salt
freshly ground black pepper

Put the lettuce leaves into a salad bowl.

To make the dressing, mix the yogurt with the garlic, tomato purée, and salt and pepper to taste, until smooth.

Pour the dressing over the lettuce and toss thoroughly to coat. Serve at once.

SERVES 4