Piece of 50% Iberian Breed Grain-fed Shoulder from Artesana Jamonera. The flavor of the Iberian grain-fed shoulder is intense, containing a higher proportion of golden and unctuous fat that characterizes the shoulder, providing juiciness. Origin Guijuelo. One of the reasons to choose grain-fed shoulder is that it meets almost the same requirements as grain-fed ham but, being smaller pieces, they require shorter curing times and thus an excellent quality Iberian shoulder can be obtained at a better price. 50% Iberian breed: Obtained from pigs with a single parent that is 100% Iberian. *Price per approximate weight for a piece between 5-6 kg.