For chili: Add beef, onions and all the spices right on the top. When the burger cooked it set the spices right into the meat. Cook through thoroughly.
Once the beef is cooked through add the tomato sauce, vinegar and ketchup to the pan. Do not drain the beef. Stir to combine. Put a medium simmer for around 5 minutes. It does not take long to thicken up.
Assemble hot dogs and add chili to the top along with mustard and the rest of your raw onion to the top.