A flavorful main-dish salad. In some places, cervelas sausage is called cervelat. The Swiss butcher at my local German deli tells me that what is called Knackwurst is actually Swiss Cervelat. Although the original recipe says not to cook or grill the sausage but rather use it "raw", I would make sure the sausage is pre-cooked or smoked and not actually raw. (Raw pork, eeww)
Also, you can use only emmenthaler (swiss) cheese and gruyere if tilsiter is unavailable, just adjust amounts.
I don't know why the food.com memory banks call it "knackwurst of frankfurter" but do NOT use hot dogs!!