Prepare the pork and the ribs (if using) and place in a container.with a lid.
Combine all of the remaining ingredients, except for the lard, and pour over the pork. Coat all of the meat then cover with a lid and refrigerate for 24 hours, turning the several times. .
Bring the meat to room temperate 30 minutes before cooking. Drain the meat discarding the marinade.
Preheat the oven to 350°F Melt the lard in the roasting pan then add all of the meat, potatoes and peppers, tossing to coat with the lard. Cook with the lid on until the meat and potatoes are tender, turning several times. Cooking time varies depending on the thickness of the meat and the oven. Adjust the time as needed.
Taste for salt and pepper and adjust the seasonings accordingly.