There's no chocolate in it. Or coffee. Or Coca-Cola. The ingredient rumors for the Skyline Chili secret recipe are plentiful on the Internet, but anyone can purchase cans of Skyline chili from the company and find the ingredients listed right on the label: beef, water, tomato paste, dried torula yeast, salt, spices, cornstarch, and natural flavors. You can trust that if chocolate were included in the secret recipe, the label would reflect it—important information for people with a chocolate allergy. All it takes to re-create the unique flavor of Skyline is a special blend of easy-to-find spices plus beef broth and a few other not-so-unusual ingredients. Let the chili simmer for an hour or so, then serve it up on its own or in one of the traditional Cincinnati-style serving suggestions (the "ways" they call 'em) with the chili poured over spaghetti noodles, topped with grated Cheddar cheese and other good stuff: 

     3-Way: Pour chili over cooked spaghetti noodles and top with grated Cheddar cheese. 
     4-Way: Add a couple teaspoons of grated onion before adding the cheese. 
     5-Way: Add cooked red beans over the onions before adding the cheese.

Source: Top Secret Recipes Unlocked by Todd Wilbur.