While there are many culinary delights considered representative of Chicago, so far as I can tell the city has never declared any of them to be the official food of the city.
This oversight strikes me as odd, as governments LOVE doing this stuff for the easy, fluffy, positive PR. The bald eagle has been America’s national bird since the late 18th century. Illinois more recently declared popcorn its official state snack in 2004 (huh?), and more recently, Governor Rauner declared pumpkin to be the official state pie in August (umm, why not?!).
Well, I’m starting the grassroots campaign right now: Italian beef ought to be the national* food of Chicago.
*”But Chicago isn’t a country!” you rightly point out. Technically correct! But “national” has a better ring to it. Consider this a move to get out ahead of the forthcoming breakdown of all societal structure, when water shortages and other nastiness force Chicago to persevere as a nation unto itself. But that is an incredible idea for a Jim Belushi-backed film franchise for another day.