There are basically two different types of cured hams in Spain, jamón serrano or “mountain ham,” and jamón ibérico or “Iberian ham.”
Jamón Serrano – There are almost 2,000 producers of Serrano ham in Spain. Eighteen of these producers formed the Consorcio de Jamón Serrano Español in 1990. The name Jamón Serrano is now controlled by the European Union since the year 2000 and it protects the processing of this product, although it does not apply to a specific region. Look for the label that has an “S” in the shape of a ham, and says SERRANO ESPAÑOL if you want to buy Jamón Serrano from the consortium. The mountain or Serrano ham is made from several different breeds of white pigs, such as Duroc, Landrace or Large White. They are fed mainly cereals and cured from 7 to 16 months.
Jamón Ibérico – This ham is made only from the Iberian pig. The breeding of the Iberian pig is restricted to an area in Southwestern Spain and Southeastern Portugal. Although fed some cereals, these pigs also roam countryside and feed on acorns. The curing process lasts from 14 to 36 months.