Frank and the Cubans, Chicago

In a neighborhood known for good Mexican food, Frank and the Cubans stands out for its specialty Cuban sandwich. The pork and ham sandwich with briny pickles is the food truck's specialty, but owner, Raul, also prides himself on his Chicago-style hot dog. Visitors to the tiny trailer also raved about the freshness, especially the plantain chips, which they've seen the chef slice and fry to order.