Most chocolate comes from cocoaplants taken from Central America to Ghana and Ivory CoastIssouf Sanogo/AFP via Getty ImagesWild ChocolateRowan Jacobsen (Bloomsbury Publishing)I thought I knew the basics about the chocolate industry. Most comes from hundreds of thousands of small cocoa farms in Ghana and Ivory Coast. Many of these use child labour a truth well hidden in the exquisite confections a lot of us are working our way through this January.Rowan Jacobsens new book Wild Chocolate: Across the Americas in search of cacaos soul doesnt tell this story in detail. Instead, Jacobsen, a science writer, spins a narrower tale