Award-Winning Chuck Wagon Chili

Ingredients

• 1 boneless beef chuck roast (3 pounds), cut into 1/2-inch cubes
• 1 pound pork stew meat, cut into 1/2-inch cubes
• 1/3 cup chili powder, divided
• 4 tablespoons canola oil, divided
• 1 large onion, finely chopped
• 1 celery rib, finely chopped
• 3 garlic cloves, minced
• 1 tablespoon chopped canned green chiles
• 1 carton (32 ounces) beef broth
• 3/4 cup beer
• 3/4 cup tomato sauce
• 2 tablespoons grated dark chocolate
• 3 teaspoons ground cumin
• 1 teaspoon dried oregano
• 1/2 teaspoon salt
• 1/2 teaspoon ground mustard
• 1/2 teaspoon cayenne pepper