Using a food processor to make pork and apple salad can help you achieve a finely chopped and well-mixed dressing. Start by seasoning pork tenderloin with salt, pepper, and your choice of herbs and spices. In the food processor, pulse apples, celery, and walnuts until they are finely chopped. In a separate bowl, whisk together mayonnaise, Dijon mustard, apple cider vinegar, and honey. Cook the seasoned pork tenderloin in a skillet until it is browned on all sides and cooked through. Let it cool slightly, then chop it into bite-sized pieces. In a large bowl, combine the chopped pork, chopped apple mixture, and the dressing. Toss everything together until it is well coated. Serve the pork and apple salad on a bed of lettuce or as a filling for sandwiches for a refreshing and satisfying meal.