In a large bowl, season the pork with a half the salt, pepper, Worcestershire sauce, oregano, garlic, and onion.Cover and let it rest in the fridge overnight, or at least an hour.
2. Cooking pork
Heat the oil over medium heat in a pot or large skillet. Add the pork (leaving the seasonings in the bowl for later use) and cook, rotating til it browns once the meat juices evaporate.Add 3 tablespoons of water and simmer covered over medium-low heat until the meat is tender, stirring and adding water by tablespoons as needed to prevent it from burning or sticking to the bottom.Once the meat is tender (between 20 to 40 minutes – depending on the cut and meat quality – uncover and let all the liquid evaporate.
3. Cooking vegetables
Once the liquids evaporate, add the seasonings left from the marinade, and cook stirring. until the onions turn translucent.Add the bell pepper, olives, and tomato and stir to combine. Incorporate the tomato sauce and stir. Cook covered over medium-low heat until the liquids reduce and you have a thick sauce.
4. Serving
Season with salt to taste and stir in the parsley. Remove from the heat.Check the serving suggestions above the recipe.