Heat the fat in a pan. Fry the chicken legs in it for about 20 minutes, then remove them.
Peel and dice the onion and sauté in the pan. Add 1 teaspoon of paprika powder, then deglaze with a little water and bring to the boil. Add 1/2 cup of sour cream directly, mix the other half of the sour cream with the cornstarch and also add. Add tomato paste as required and taste and season everything with salt and paprika powder.
Put the chicken drumsticks back in the sauce and let stand for a few more minutes.