Ingredients

• 2 tablespoons vegetable oil
• 2 yellow onions, chopped
• 1 sweet onion, chopped
• 1 head garlic, peeled and minced
• 1 yellow bell pepper, chopped
• 1 orange bell pepper, chopped
• 2 pounds cubed beef stew meat
• 2 pounds Italian sausage meat
• 4 slices applewood smoked bacon, cut into 1-inch pieces
• 2 (28 ounce) cans tomato sauce
• 2 (6 ounce) cans tomato paste
• 2 (14 ounce) cans black beans, rinsed and drained
• 2 (14.5 ounce) cans kidney beans, rinsed and drained
• 1 (7 ounce) can chipotle peppers in adobo sauce, chopped
• 2 cups beef broth
• 1 (12 fluid ounce) bottle dark beer
• 1/4 teaspoon chili powder, or to taste
• 1/4 cup crumbled dried oregano
• 1 tablespoon fresh-ground black pepper
• 2 teaspoons salt, or amount to taste
• 2 1/2 ounces dark chocolate candy bar