If you know and love the Vidalia onion—an onion sweet enough, its fans say, to eat like an apple—you likely also know it as a product of Georgia, as proudly claimed as the peach. But the story of the Vidalia’s popularity is far more complex than just one of a local onion made good. In this episode of Gravy: an onion’s success story, born of clever marketing, government wrangling, technological innovation and global trade.