We take the korv, it's red skin colored with falu rödfärg, and it is microwaved to just before it cracks open. After that we cut the skin and put on mustard and ketchup. It is served with whole grilled onion and Pyssling Pudding. A mix of lime jell-o and chocolate.
Such a shame that they ran out of ideas after they moved apartments and were never able to step away from the kitchen smashing with viking weaponry running joke. They were good dudes. I still have their apron lying around.