Dice the pork leg into 1.5 cm cubes and season with salt.
Heat the oil in a pot, add the onion, carrot and half of the parsley and sauté for 5-7 minutes on a low heat until soft and translucent.
Add the garlic then the diced meat and fry gently until the meat turns white.
Sprinkle with the sweet Hungarian paprika, cumin and bay leaf, and stir for a minute until the spices are well incorporated into the meat.
Add enough of the chicken stock to cover the meat and gently simmer gently for 20 minutes or until the meat has begun to soften.
Add potatoes and green beans to the semi-softened meat, and the remainder of the stock and then cook until the potatoes are just cooked. Add more stock or water if too much of the liquid evaporates.
Meanwhile, whisk the flour into the sour cream until all lumps are removed. , When the potatoes are just cooked, stir the sour cream into the soup and cook for a few minutes.
Garnish with the rest of the parsley and some dill and serve with some nice crusty bread.