Iberian acorn-fed ham cured in the Guijuelo region comes from native Iberian pigs raised free-range and fed on acorns and field herbs in the pastures of southwestern Spain during the montanera period. Cured in the drying sheds and cellars of Guijuelo, at their optimum point of curing, in pieces weighing between 7.5 and 9.5 kilos.