Waldorf Salad I
3 tart apples - peeled, cored and chopped
1 tablespoon lemon juice
1 cup seedless grapes
2 stalks celery, chopped
2 green onions, chopped
2 tablespoons mayonnaise
2 tablespoons plain yogurt
3 tablespoons apple juice
1/4 teaspoon celery seed
1 bunch watercress, trimmed and chopped
2 tablespoons chopped walnuts