01 - In a large stockpot, combine ground beef and water. Use a wooden spoon to break up the meat thoroughly into small pieces. Do not brown the meat—the authentic texture comes from simmering raw beef.
02 - Add chopped onion, garlic, tomato sauce, tomato paste, Worcestershire sauce, vinegar, brown sugar, chili powder, cinnamon, cocoa powder, allspice, cumin, cloves, cayenne, bay leaf, salt, and black pepper. Stir well until fully incorporated.
03 - Bring mixture to a gentle boil over medium-high heat, then reduce to low and simmer uncovered for 1 hour 30 minutes. Stir occasionally and skim any fat from the surface as needed.
04 - Remove bay leaf and discard. Taste the chili and adjust salt or spice levels as desired.
05 - While chili simmers, cook spaghetti according to package directions until al dente. Drain well in a colander.
06 - Layer cooked spaghetti in bowls and ladle chili sauce generously over pasta. Top with cheddar cheese, additional onions, and kidney beans as desired. Serve immediately with extra toppings on the side.