@impeeza, the number of people who will argue until they're blue in the face that hot dogs aren't sandwiches is staggering. Some further food for thought, Tacos are also sandwiches.
We have «empanadas» which are a corn tortilla Filled with minced and seazoned beef and potatoes, closed on cresent shape with the borders sealed, then is deep fried. And that is so a sandwich which «empanada» means literally between breads
By the way, a hot dog is indeed a sandwich!