First, we cross-pollinated existing apples: Collect pollen from one flower, put it on the tip of a pencil eraser, and rub it into another. We crossed dozens of crisp, flavorful varieties such as Gala, Fuji, and Pink Lady. But the best offspring came out of Honeycrisp and Enterprise parents. We grew the crossbred seeds into 5-foot trees, grafted those onto rootstocks (to make them start producing quickly), and planted them in evaluation orchards. A few years later, they fruited—and we began tasting.