In hot oil quickly saute the pork and then the beef, making sure to caramelize well. Add the julienned caramelized onions, the diced vegetables, the chilies, garlic puree and cook a minute or two. Add the chicken stock, bring to a boil then simmer for a few minutes. Add the black beans and finish with the red wine vinegar and chopped cilantro, salt and pepper. Serve and garnish with salsa.