Heat 2 tbsp of zsír in a pan, and when melted, , then fry the chicken liver until browned on both sides. Set aside.
Add another tbsp of zsír to the pan. When melted, add the chopped onion and a good pinch of salt and cook for apprx 5 minutes until it softens. Then add the Hungarian TV paprika and cook for another 5 minutes or until the Hungarian TV paprika has softened.
Take the pan off the heat and add the sweet Hungarian paprika and stir to mix well.
Return the pan to the heat and add the tomato paste, the chopped tomatoes and marjoram along with the chicken stock.
When the vegetables are simmering gently, add the chicken livers (including any resting juices), then simmer for a further for about 10 minutes, or until the chicken livers are just cooked.
Just before the chicken livers are cooked, add in 1 tbsp of chopped parsley and stir through the sauce.
When cooked, mix the chicken liver sauce and the tarhonya together in a large serving bowl, and garnish with the remaining parsley.
Serve with pickles.