Made from grapes alone, organically farmed, then harvested, fermented, aged, and bottled without additives, natural wine “has nothing to hide,” writes Paris-based, British-American wine expert Aaron Ayscough. “It’s wine that seeks to express, in every sip, its traditional and crucial link to nature.” Yet for something so natural, it's a surprisingly complex and contentious topic that divides the wine industry, rooted in its pastoral self-image despite its abundance of chemically altered ingredients and technological manipulation.