The Swedes have a Christmas sausage , called Korv ( potatoe sausage ). .really good ! I had an Italian butcher make it for me on Christmas . . he asked me if he could copy the recipe . . I obliged , later in the summer I went in and he was selling ' Korv ' , I told him the Swedes usually only eat ' Korv ' at Christmas , he said they ( customer's ) love it !

You do know that "korv" is simply the Swedish word for "sausage" right?

What you had was probably "Potatiskorv" or "Potato Sausage": https://en.wikipedia.org/wiki/Potatiskorv