Nicolina Sergiacomo Peduzzi is the matriarch of Rustichella d'Abruzzo. When someone is invited to her family table, she makes her famous Spaghetti alla Nicolina—as we now call the dish. The simplicity and the flavors of the caramelized zucchini and spicy Pecorino Romano cheese make this one of most flavorful pasta dishes you will ever taste.