This recipe, a spicy new twist for an old favorite, comes from The Sandwich Book, by Judy Gethers, Vintage Books, Random House, New York, 1988.
In a small bowl, combine the tuna, apple, onion, and celery. In a separate bowl, stir together the curry, cumin, and jalapeno jelly, and add to tuna. Mix well. Warm the pitas, cut open, and stuff.