Deborah Cadbury takes a journey into her own family history to uncover the rivalries that have driven 250 years of chocolate empire-building. In the early 19th century Richard Tapper Cadbury sent his son, John, to London to study a new and exotic commodity: cocoa. Within a generation, John's sons had created a chocolate company to rival the great English and European firms. At the turn of the millennium Cadbury was the world's largest confectionary company. But before long it too faced a threat to its very survival ...