Melt the clarified butter and stir in the spices. Add onions and carrots, sprinkle with sugar and sauté everything over low heat for 5 minutes. Now add the pointed peppers, sweet potatoes, turnip, potatoes and leek and pour over the stock (approx. 1 liter). Add the bay leaf. Simmer the stew for approx. 30 - 60 minutes.
Then season with salt and paprika powder, then puree with a hand blender.