Melt the pork dripping in a pan over a medium heat and then add the onions. Fry until soft and translucent. Then add the other vegetables and fry over a low heat for about 8 minutes, or until soft.
Add the tomato paste and stir through for about a minute, then stir in the paprika, and immediately add the lentils and the chicken stock and stir well and bring to a boil.
Add the smoked pork knuckle meat and reduce the heat, cover and simmer for 30 minutes or until the lentils are soft.
Stir through the parsley and serve with some crusty bread.