Reduce heat to medium and add the remaining 1 1/2 teaspoons oil to the pan. Add onions and bell pepper. Cook, stirring, until the onions have softened and are golden brown, 7 to 10 minutes. Add garlic, jalapeños, sun-dried tomatoes, anchos chiles (if using), and the reserved spice mixture. Stir until aromatic, about 2 minutes. Add beer, bring to a simmer and cook for 10 minutes, scraping up any brown bits clinging to the bottom of the pan. Add tomatoes and their juices, chocolate, sugar, bay leaves and the browned beef. Add water and bring to a simmer. Cover the pot and simmer, stirring occasionally, until the beef is very tender, 1 1/2 to 2 hours.