Do you heat it Lil Me ?  I like sauerkraut, but I only like it cold. (except for the ice crystals....lol) 
  I made the yummiest buns ever.  I had a left over roast beef, which I sliced really thin.  I caramelized some mushrooms, garlic, parsley and white wine.  I made creamed onions with asiago cheese, and layered it all on the grilled buns...open faced and grilled it a wee bit.  OMG...it was yummy.  Added a green salad.  Delish.