In a bowl, mix together mayonnaise, lemon zest, 1 tablespoon lemon juice, and pepper. In another bowl, mix together turkey, celery and leaves, apple, raisins, remaining 2 tablespoons lemon juice, oil, and 2 tablespoons of mayonnaise mixture.Advertisement
Spread each bread slice with about 1 tablespoon mayonnaise mixture. Top with turkey salad, dividing evenly. Garnish with cucumber and watercress.