Sadly the store on Halsted is closed but they have 3 others! The original is on Irving Park near Sheridan, the 2nd is on Lawrence near Ashland and the new one is on Madison in Forest Park.
The food is to die for. I've never eaten anything there that I haven't loved (especially their onion straws). The place in Forest Park has pizza too.
All in all I'd say that if you want an experience unlike any other in Chicago try Byron's
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