The organic wine industry, once a cottage industry run by and targeting a handful of mavericks, is now big business. Organic wine grape production in Australia increased 120 per cent between 2011 and 2014 alone, with those grapes reaching a value of $117m. Three South Australian organic winemakers – Temple Bruer Wines, Mount Horrocks Wine and Grosset Wines – share their journey. By 2012, four per cent of the world’s vineyards were organic. Organic wine…