Cincinnati Chili Con Carne Recipe

Ingredients

• 4 cups beef broth
• 2 pounds ground beef
• 1 tablespoon olive oil
• 3 cups finely chopped onions
• 1 tablespoon finely minced garlic
• 1/4 cup chili powder or more to taste
• 1 teaspoon ground cumin
• 1 teaspoon ground cinnamon
• 1/4 teaspoon ground allspice
• 1/4 teaspoon ground cloves
• 1/2 teaspoon hot red pepper or more to taste
• 1 bay leaf
• 2 cups fresh or canned tomato sauce
• 2 tablepoons cider or white vinegar
• 1/2 ounce (one-half square) unsweetened chocolate
• Salt, to taste
• 1 pound spaghetti, cooked
• 8 ounces sharp Cheddar, finely grated
• 1 (15-ounce) can dark red kidney beans, drained and rinsed
• 1 small white onion, finely diced
• Oyster crackers, for serving