Single Origin Extra Dark Chocolate. Some dark chocolate bars are super sweet, while the rest look to bring out dark and bold smoky flavors. So it is a rare opportunity a bar brings you a taste you may not have considered before. This is why we love the Carenero dark chocolate bar so much. The Franceschi Fine Carenero dark chocolate bar comes with cacao beans harvested from the northern coastline of Venezuela. Right where the Caribbean ocean kisses the shores of South America.