Denominations of Origin (DO) On Iberian ham, these are official seals that guarantee the quality and origin of the product. They assure that the ham has been produced in a specific region, following traditional methods and complying with strict standards Regarding the breed of pig and its diet. In Spain, there are four main DOs: Dehesa of Extremadura (temperate climate), Guijuelo (cold and dry climate, mild flavor), Jabugo (humid climate, fat infiltration), The Pedroches (intense flavor). Each PDO protects the regional uniqueness and certifies a ham from high value and authenticity for the consumer.