GHANA, whose biggest export is cocoa, on Thursday denounced a proposed European Union directive that would allow chocolate makers to put less cocoa butter in their products and still call it chocolate. The text, once adopted, would allow chocolate with added vegetable fats. The fats would replace cocoa butter up to a limit of 5% of total weight and could still be sold as chocolate throughout the EU. A senior official at Ghana’s finance ministry said the directive “was a stab in the back of cocoa producers” and would affect the economies of developing countries, main producers of the cash crop. On Cote d’Ivoire, the world’s biggest cocoa producer, has argued that there are no viable control procedures for detecting the nature and percentage of vegetable facts in chocolate. The country expects that cocoa prices, sliding since last October, could drop another 20%.