Kapusta

piece of pork (country style spare ribs, pork chop, etc. < 1 lb)
1 small onion, chopped
1 medium apple, peeled, cored and chopped
1 head of cabbage, shredded
1 bay leaf
1 tbsp vinegar (or more, to taste)
salt and pepper to taste
water to cover
Kielbasa, as much as you want (I use a couple of rings) sliced into rounds.

Using a soup pot, pour in water - just enough to cover pork. Boil pork, bay leaf and onion until meat in tender. Remove meat. Add remaining ingredients. Cook until cabbage is tender. Remove the meat from the pork bones and break into small pieces. Add to cabbage. Add sliced kielbasa. Season to taste.