Giovanni Bacilieri remembers the first hot dog that got him hooked. It was from a casual restaurant in his hometown of Barranquilla, Colombia, a place known as much for its native daughter, Shakira, as its robust hot-dog culture. At this restaurant, as was typical of other sausage-centric eateries in Barranquilla, the menu was filled with a seemingly endless number of choices, but five-year-old Bacilieri settled on one covered in a sweet and sticky pineapple concoction.