Powerplant Ventures, the US private-equity firm formed two years ago to back companies "reinventing the food system", has made its latest investment, leading a consortium that has acquired a majority stake in local tortilla chip business Beanfields Snacks. Mark Rampolla, the man behind coconut water brand Zico, is one of the founders of Powerplant Ventures and will be co-chairman of Beanfield. He talked to Dean Best about Powerplant Ventures' investment strategy, plans for Beanfield and how a US gang intervention programme is involved in the deal.