My Dad (an inveterate New Yorker) is coming to visit next month and told me "we don't need to do a lot of advance planning, just keep your eye out for some good bratwurst."
Being new in town myself (and, more to the point) a vegetarian since my teens, I need help. I don't even know what bratwurst is, really. Actually, you'd probably better not explain. But I'd be grateful for ideas on where to go! Dad's a true chowhound & would appreciate a true, no-frills Chicago dining experience.