Place oil in a large, heavy pot over medium heat. Brown the sirloin in batches. Remove to a bowl with a slotted spoon. Add ground beef, chorizo and onions to the pot and brown. Make sure to break up the meat. Return sirloin to the pot. Stir in remaining ingredients, except for garnishes. Bring to a boil, reduce heat, simmer for 2 hours. Stir occasionally, breaking up tomatoes. Before serving, discard cinnamon stick, bay leaves and jalapenos. Garnish, if desired.
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