The choripan is a popular street food snack in Argentina. Incredibly simple but oh so good, it's just sausage, bread and chimichurri. Traditionally chorizo is used to fill a chargrilled baguette or roll, but any type of sausage can be used. Sometimes mayonnaise or salsa are added, or a combination of both.
Cook chorizo on the barbecue or under the grill. When almost done, slice in half and continue cooking so they get a nice caramelised edge. Cook baguette on the grill until lightly toasted.
Mix salsa ingredients together. Spread chimichurri (link below) on the baguette, fill with chorizo and top with salsa.