Barros Jarpa is a popular sandwich that includes ham and melted cheese. The name was coined in the restaurant of the National Congress of Chile where Minister Ernesto Barros Jarpa always asked for this sandwich. It's a derivative of the Barros Luco sandwich.
The minister's cousin, President Ramón Barros Luco, asked for sandwiches with beef and cheese, these sandwiches were called Barros Luco. But Barros Jarpa found this combination hard to eat, so he replaced the beef with ham.