El Indio (San Diego, CA), Charlie's Diner (Spencer, MA), Paradise Pup (Des Plaines, IL) Stops include a Mexican restaurant and tortilla factory in San Diego where father and daughter work side-by-side. A Massachusetts diner where father and son ha... (more)ve been working together for 20 years. And a legendary Chicago burger joint where two brothers turn out for char-burgers and three-layer fries.