The unique vocabulary surrounding Spanish hams can be daunting initially, until you understand the three key variables used to classify Spanish hams: pig breed, diet and cut.
Pig Breed & Diet
Ibérico Breed Pigs
There are four classifications of Jamón Ibérico, made from the Ibérico breed pig. The classifications reflect the breed of pig, the percent of pure Ibérico genetics in the pig and the quantity of acorns they eat (the word "acorns" is translated as “bellota”).
Jamón 100% Ibérico de Bellota - made from free-range, 100% Ibérico breed pigs that eat acorns.
Ibérico de Bellota hams are from Ibérico pigs that live outdoors most of their lives and spend the last three to four months of their lives feasting on rich, sweet acorns that have dropped from the ground from holm and cork trees in the meadows of a region called the dehesa. This period of grazing on the open range is called the montanera, and the pigs add about half their weight during this period.
The coveted hams they produce are unique in the world: beautiful nutty ham slices which glisten when they are served because 60% of their marbled fat contains healthy mono triglycerides (like olive oil) that melt at room temperature. Because of its quality, many connoisseurs have referred to Jamón Ibérico de Bellota as the "Beluga caviar of hams."
Duroc & Landrace Breed Pigs
Jamón Serrano comes from white pigs of the Duroc or Landrace breeds. These pigs are raised on farms, rather than open ranges, and fed a diet of cereals. They are cured in Spain for 8 months to two years.
Jamón Cuts
Cured meats from Spain are usually referred to by the following names, whether made from Ibérico pigs or others. The Ibérico versions of each of these cuts only became available in the U.S. in 2007.
Other Classifications
Just as with wines, some hams now carry a Denominación de Origin, indicating where and how the ham was cured. There are also quality seals, from industry groups like the Consorcio del Jamón Serrano Español, on jamones that deliver the quality and flavors synonymous with specific guidelines.