We make almost the exact same dish, but with pork ribs ion place of the roast. Slow cooker, 8-10 hours.Here's one from meine Oma.
Buy the fattest pork roast in the store. Get "enough" white potatoes, peeled or not. Get a "few" sweet apples. Have plenty of homemade kraut. Get a cast iron Dutch oven. Add all the above in the covered Dutch oven and pop into the oven about 325*F for 4 hours. The kraut breaks down the pork, the potatoes soak up and mutes the kraut sharpness, the apples sweeten. Make sure the Dutch oven has been seasoned.
If your are in the Deep South add cornbread with fried cracklings.
We have rediscovered cast iron after learning about how toxic non stick pots and pans are. A superior form of cookware.