Nestle, the world's biggest food company, says it has made significant progress removing cocoa produced in protected forests in West Africa from its supply chain as pressure builds from consumers and governments for ethically sourced cocoa. The company said it had mapped, using GPS co-ordinates, 75% of the 120,000 cocoa farms it sources from directly in Ivory Coast and Ghana, which produce some two thirds of the world's cocoa. It found around 3,700 farms in protected forests in the process of mapping, and removed them from its supply chain.