I'm not sure. It's a type of sausage, though.
Yes, it is a sausage sandwich of sorts, so I think it was German pork at first.
Look, hotdogs are my favourite! Oh, how nice! They're also called frankfurters. Do you like yours grilled or steamed? Grilled! I also like them steamed, though. Do you also like variations on hot dogs, like corn dogs or pigs in a blanket? Yes, I do! Hey, do you know where the hot dog originated? I know that they were originally imported from Germany and then became popular in the US. Oh cool! Were they made of pork?
This type of sausage was culturally imported from Germany and popularized in the United States, where it became a working-class street food sold at hot dog stands and carts.