In a large bowl toss the apples in lemon juice. Add celery, grapes, raisins and walnuts
In a separate bowl stir together the mayonnaise, sugar, red wine vinegar and pepper. Taste and adjust to your liking with a little extra mayonnaise or more vinegar.
Coat apple mixture in desired amount of dressing (you may not want to use it all).
Refrigerate until ready to serve. Serve cold, on top of bib lettuce or large lettuce leaf.
