Chicago Food Avondale Tap – Flat Top Burger July 25, 2024 2(4oz)CAB Patties, Cheddar, White American, Grilled Onions, Pickles, Ketchup, Dusseldorf.I ordered mine without ketchup. It was my first time there and I was blown away by this burger. by dr1ftzz Write A CommentYou must be logged in to post a comment.