Ditto! As a native Chicagoian I am with Johnspizza. Buns are steamed not baked.
First off... Poppy Seed Buns. Second off... Tomatoes are wedged, not diced. Third off.... Dill pickle relish, never sweet. Fourth off... Dill Pickle Wedge. Fifth Off... Celery Salt. Sixth off.... Please stop writing horrible "recipes" :-)
There is no dog like a chicago-style dog. Forget the dang ketchup and try this recipe. It's easy, delicious and satisfying. I recommend a slice cucumber as well.