How food festivals took a bite out of America

Seems like every town in America hosts some sort of food festival these days. There’s the quirky ones, like the Gilroy Garlic Festival, first launched in 1979, and the Waikiki Spam Jam, formerly held in Austin, Minn., home of Hormel Foods. Then there are the mac daddies, like Taste of Chicago, the country’s biggest, which...