Carefully pour out the hot oil from pan, return pan over medium heat, add the onion, garlic and sauté for about 4 minutes, return cooked pork to pan with its juices, along with oregano, bay leaves, ½ cinnamon stick, beer, broth, ½ tsp. salt, ¼ tsp. of pepper and stir to combine. Allow to come to a simmer, cover with a tight fitted lid and transfer into preheated oven to cook for 2 hours.