Peel the potatoes in 1 cm slices, cut the paprika into strips, dice the onions.
In a large pan, fry the onions, bacon, then mince, season with salt, pepper, sweet paprika, curry, stir in tomato paste and deglaze with the stock. Put in the potato slices and stir well, top with herb butter and steam with the lid closed for approx. 1 hour over medium heat.
After 45 minutes, add peppers and mushrooms, add sour cream just before the end of the cooking time. Bring to the boil briefly and sprinkle with fresh parsley.
If you like, you can sprinkle parmesan on the dish.
The steam method and cooking times naturally depend on the type of container and potato.