In a large, heavy-bottomed pot, sauté meat in lard to brown on all sides.
Add onion and cook until soft
Cover and cook for about 10 minutes stirring occasionally to prevent sticking.
Add stock, parsley, scallion, garlic, thyme, salt and pepper. Cover again and cook over low heat for one hour or until meat is tender.
Add sausage and cook for 10 minutes.
Next add oysters and their liqueur slowly while stirring.
Cook for 10 minutes longer before serving.