Mouthwatering Slow Cooked Barbacoa with Homemade Marinade Recipe

Mouthwatering Slow Cooked Barbacoa with Homemade Marinade Recipe Ingredients: - 3 lbs beef chuck roast - 1 onion, quartered - 4 cloves garlic, minced - 2 tablespoons olive oil - 1 tablespoon ground cumin - 1 tablespoon ground oregano - 1 tablespoon smoked paprika - 1 teaspoon ground cloves - 1 teaspoon ground cinnamon - 2 bay leaves - 1-2 chipotle peppers in adobo sauce (optional, for heat) - 1/4 cup apple cider vinegar - 1/4 cup lime juice (about 2 limes) - 1/4 cup beef broth - 1 tablespoon salt - 1/2 teaspoon black pepper