The Jabugo PDO awards the SUMMUM quality grade to hams and shoulders which have achieved a harmony in their organoleptic attributes as well as a characteristic aromatic richness. This is as a consequence of the combination of many factors. On the one hand, the racial purity of the 100% Iberian pigs, traditional rearing methods and an exclusive diet of acorns and free-range grazing on the pasturelands. And on the other hand, a very slow curing process in the unique natural conditions and microclimate of the towns and villages of the Sierra de Huelva.Each piece is identified by a seal and a band showing the vintage year, the quality grade and an identification code. This code should coincide on both the seal and the band. The piece also carries the producer’s own labelling.