As Chicagoans, we waste a lot of energy being uptight about our food. Sure, extolling the evils of ketchup doesn’t seem that insane, until one day you find yourself at an “American” restaurant in London lecturing a beleaguered employee on the complete and total inaccuracy of their “Chicago-style” hot dog, which should never, ever be topped with sauerkraut, much less have KETCHUP on it. EVER!! DO YOU PEOPLE HAVE NO RESPECT!?! ...Whew. Deep breaths. I’m OK, I swear.