Preheat your oven to 350 F.
Warm the olive oil in an ovenproof stew pot over medium heat then add the garlic, onions, and red chilies, and cook for 3 to 5 minutes or until the onions are soft.
2 onions, 4 garlic cloves, ¼ cup extra-virgin olive oil, 2 red chilies
Lower the heat and add the bell peppers, diced tomatoes, chili powder, smoked paprika, cumin, cayenne pepper, oregano leaves, and salt and pepper to taste.
2 bell peppers, 28 oz. can diced tomatoes, ¼ cup chili powder, 2 tbsp. smoked paprika, 1 tbsp. ground cumin, ¼ tsp. ground cayenne pepper, Small bunch of fresh oregano leaves, Sea salt and freshly ground black pepper to taste
Place the pork shoulder in the pot, give everything a little shake, then add the red wine vinegar, and pour in enough water to just cover the meat.
4 ¼ lb. boneless pork shoulder, 3 tablespoons red wine vinegar
Bring to a boil, cover, and place in the oven for 3 hours.
The chili is done when you can easily break the meat apart with a fork.