We wash the cabbage, cut it in half and then chop it.
We clean the onion, wash it and chop it as small as possible.
Put the oil in a pan and heat the onion together with the pancetta. Add the cabbage well drained of the juice and mix with a wooden spoon.
Add hot water to cover the cabbage, bay leaves, knorr, salt and pepper to taste. Bring to a simmer.
When the cabbage has become soft, add the tomato juice and mix. Let it cook for another 15 minutes.
Serve hot with hot polenta :)