In its home country of Germany, the hot dog was called the frankfurter. It was named after Frankfurt, a German city.
"Sausage has been known since ancient times. Some varieties came to be known by their city of origin: the frankfurter from Frankfurt am Main, Bologna from Bologna, the wiener from Vienna (Wien)."
We have chicken, tortilla and potato leek. Could I get any of those with little frankfurter slices and homemade croutons? No.
a frankfurter served hot on a bun.