Cincinnati Chili

Ingredients
1 tablespoon vegetable oil
1/2 cup chopped onion
2 pounds ground beef
1/4 cup chili powder
1 teaspoon ground cinnamon
1 teaspoon ground cumin
1/4 teaspoon ground allspice
1/4 teaspoon ground cloves
1 bay leaf
1/2 (1 ounce) square unsweetened chocolate
2 (10.5 ounce) cans beef broth
1 (15 ounce) can tomato sauce
2 tablespoons cider vinegar
1/4 teaspoon ground cayenne pepper
1/4 cup shredded Cheddar cheese
Directions
1.Heat oil in a large saucepan over medium heat. Add onion and cook,
stirring frequently, until tender, about 6 minutes.
2.Add beef, in batches if necessary, and cook, breaking up with a
wooden spoon, until browned.
3.Add chili powder, cinnamon, cumin, allspice, cloves, bay leaf,
chocolate, beef broth, tomato sauce, cider vinegar, and red pepper.
Stir to mix well. Bring to a boil. Reduce heat to low; cover and
simmer 1 1/2 hours, stirring occasionally.
4.It is the best if you now refrigerate overnight.
5.Remove the bay leaf. Reheat gently over medium heat. Serve over hot,
drained spaghetti. Top with shredded cheddar