Q: I want to plant potatoes this spring. I tried last fall to get some seed potatoes but found nothing local or in the more popular catalogues.

Most places in this world are synonymous with certain foods. Maryland has crab cakes, Kansas City has barbecue, Philly has cheese steak and Chicago has pizza—a very specific type of pizza. It’s three-dimensional, and you can’t fold it in half. Hell, you can hardly hold it in your hand. There is no mistaking a true Chicago-style pizza. And those who have encountered the real deal have no trouble picking out an imitator.