Looking for a soup recipe containing cabbage, kielbasa and sauerkraut

My mother-in-law had a boyfriend that worked in a nursing home where my mother-in-law volunteers. He used to make a Polish soup for some of the elderly when they were having trouble going to the bathroom that would make things happen. He recently passed away and some of the people have been asking her for the soup and she can't find his recipe. She knows it contains cabbage, kielbasa and sauerkraut. Can anyone help me?

I think the soup is called "Kapusniak" in Polish.

netcooks.com/recipes/Soups/Kapusniak.z.Kiszonej.Kapusty.(Sauerkraut.So up).html

Try googling 'kwasnica'. It's similar to Kapusniak, but from the South of Poland. The recipe above is OK, but this mught be closer.