Wash, peel and dice the potatoes and cook in boiling salted water for about 5 minutes. Pour potatoes onto a sieve and drain. Clean the peppers and spring onions, wash and drain.
Dice the peppers, cut the spring onions into rings. Cut salami into pieces. Heat oil in a pan. Sauté the salami, spring onions and bell peppers in it. Add sauerkraut, heat and braise for about 5 minutes.
Stir from time to time. Mix the sour cream and eggs with the whisk of the hand mixer. Season with salt and paprika. Fold the potatoes into the sauerkraut, season with salt and pepper and put half of them into a greased casserole dish.
Pour half of the sour cream of eggs over it and add the remaining sauerkraut. Crumble the feta cheese over it and pour the remaining sour cream of eggs over it. Bake in the preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 40-45 minutes and let it set.