Cut pork into large pieces. Heat up 2 tbsp. oil in a deep saucepan and fry the meat from all sides for 8 minutes. Slice onion into semi-circles, add to the meat and cook for 6 minutes. Remove the top leaves from the cabbage, shred the cabbage, salt and rub with the hands. Put in a saucepan and fry on a high heat for 10 minutes, stirring constantly. Mash tomatoes with a fork, add to the cabbage and meat along with bay leaves and pepper. Cover with a lid and simmer for 10 minutes. Ring sausage and chipolata sausages and fry in the remaining oil on both sides, for 2-3 minutes. Put into solyanka and cook for another 5 minutes.