For more than two decades, Hervé Durand has been offering visitors the opportunity to travel back in time some 2,000 years. Not by operating a time machine. Instead, he hands out glasses of wine. Each year, on the second Sunday in September, Durand leads an “experimental archaeological adventure” at his Mas des Tourelles vineyard in the lower Rhône valley. In partnership with the French National Center for Scientific Research, he turns his harvest into wines that taste like Roman times, made according to the historical writings of authors such as…