When Prohibition finally went into effect on January 16, 1920, those who owned American vineyards for the sole purpose of turning those grapes into wine faced a dilemma: tear up the vines and plant something else, or try and find a way to still make a profit from the grapes with the hope that ban on booze didn’t last very long. This conundrum was especially felt among the vintners of the Napa Valley, who by 1920 were already making a good portion of America’s wine. Here was the problem: if these winemakers tore up their vines in search of other...