It was only May, and it had already reached 100°F (38°C) in Córdoba, Spain. That’s nothing, the locals told us. Within recent years, scorching summer temperatures have reached more than 116°F (47°C). Suffice to say, Córdoba is one of the hottest places in Europe. Since the surrounding province is also a place that makes wine—from the Montilla-Moriles D.…