Foie gras is a pricey delicacy, costing $40 to $80 a pound. It's also controversial, with bans in several countries and cities like New York planning bans of their own. The reason for the cost and the controversy is that it's produced by force-feeding ducks and geese. But in Extremadura, Spain, fifth-generation farmer Eduardo Sousa is trying something different: natural foie gras. Instead of force-feeding, Eduardo allows his geese to feed naturally on acorns and olives, and his processes have be