Enjoyable as always! Much different than "our" version. 98% of the time it was sausage based, usually Kowalski Holiday sausage. My dad would slice it into chunks and simmer it for some time. Then we would remove the sausage leaving the sausage water and add the sauerkraut. this would cook for a fair amount of time, but not your 6 hours. Then we brown some flour over medium high heat, let that cool a bit and them make a roux and thicken the cabbage mixture. If the proportions are right it's a light golden brown and not too thick, just borderline soupy and the sausage is added back in for the final cooking. Generally only make it now and then, and I recall from time to time my mother would make it with pig's knuckles.