Pierogi Fillings, Sauerkraut

Recipes Ingredients:

2 lb Sauerkraut
1/2 lb Diced salt Pork (optional)
1 lg Onion (thinly sliced)
1/2 lb Butter (optional)
Sugar to taste
Fresh shredded cabbage
Salt and pepper to taste
-(optional)
1/2 lb Diced bacon (optional) or
Diced mushrooms (optional)

Recipe Instructions:

Rinse sauerkraut and drain well. Saute sauerkraut along with the onions in butter, bacon or salt Pork for approximately 20 minutes on low heat, in a covered pan, stirring from time to time. Add salt, pepper, Sugar (mushrooms if desired). Cool. * It doesn't say what to do with the shredded cabbage.