Grilled Brat Bath

No story here, just a good way to grill the brats before hand and have the hot and tasty later. Heat in a roaster or crock pot: 1 12oz can beer 3 Tblsp prepared mustard (op) 1 large onion sliced 2 Tblsp butter 2 cups sauerkraut Add cooked, grilled brats, heat and eat.