Heat the olive oil in a casserole dish. Add the pork and fry until browned on all sides. Once browned, remove the pork and set aside.
Add the onion, pancetta, garlic, green pepper, paprika, bay leaf and thyme, and fry until the onions have softened.
Add the tomatoes, tomato purée and wine, mix well, and bring to the boil.
Reduce the heat and return the pork to the pan with the chorizo. Cover and simmer for 50 minutes.
Finally, just before serving, add the clams and parsley, mixing well, and cook for a further five minutes or until the clams have opened. Discard any that don't open.
Mix a sprinkling of parsley and coriander with the rice. Serve with the stew spooned over the top and garnished with coriander.
