Paraguayan lomitos: Marinated pounded sirloin steak, cheese, lettuce, tomatoes, a runny egg, garlic creamy spread, in between the softest freshest bread. Words don't do these justice. Pictures don't do these justice. The only thing better is when someone at the table announces they're getting seconds and then it's ok for you to also!
Oh, and they're served from a bus or outside vendor stand! At 3:00 am, expect the lines to be long. But they're worth the wait.