Dice the bacon and leave it out in a pan. Quarter the peppers, clean, wash and cut into fine strips. Mix 3/4 of the bacon, pepper strips and sauerkraut. Season roulades with salt and pepper and cover them thinly with the sauerkraut mixture.
Roll up and fix with wooden sticks. Heat the oil in a pan and fry the roulades for about 5 minutes. Pour on 1/2 litre of water, bring to the boil, cover and stew for about 1 1/2 hours.
1/2 hour before the end of the cooking time, peel the potatoes, wash them and boil them in salted water for about 20 minutes. Heat the rest of the filling in a saucepan. Season with bay leaves, salt, pepper and sugar. Remove the roulades from the pan and keep warm.
Stir the sauce thickener and cream into the boiling roast stock, bring to the boil and season with salt and pepper. Drain the potatoes, pour into a bowl and sprinkle with the remaining bacon.
Arrange roulades on the sauerkraut. Sauce extra will do.