Ruth's grandmother, Hilje Mulder Folkers, had a favorite recipe of hers that Ruth loved with kale and potatoes, rather than sauerkraut (zuurkool).  This is a quick and easy recipe for cold winter months.
 Use equal parts of sauerkraut and potatoes boiled separately.  Drain potatoes and mash.  Drain sauerkraut and combine with potatoes; mash together.  Add cooked metzwurst (or cooked polish sausage or cooked frankfurters) cut in pieces.  Season to taste.  Serve Hot.