12 slices bread or sandwich rolls, toasted if desired
lettuce leaves, Optional
Salt
1/4 tsp. ground black pepper
1/2 cup mayonnaise, to moisten
1 tsp. lemon juice
1 tbsp. fresh parsley, chopped, Optional
4 cups turkey, cooked, diced
1/2 cup red onion, finely chopped
1 cup celery, diced