Characteristics of Duroc Jamón and the Pigs Behind It
Pigs are remarkable animals that give us some truly outstanding products, from Jamón Gran Reserva Gran Reserva to jamón ibérico de cebo ibérico. Today, we're taking a closer look at one particularly interesting breed of white pig: the Duroc.
If you'd like to learn more about this breed and the jamón serrano produced from it, here are the key characteristics of Duroc jamón you should know. And who better than Enrique Tomás to talk about cured jamón? Let's get started!
What Are Duroc Pigs?
Duroc pigs are a breed of white pig originally from the United States. They produce meat with a relatively high fat content, making them particularly well suited to producing jamón serrano. The breed originated from a cross between two pig breeds with European and African ancestry: the Old Duroc and the Red Jersey. Duroc pigs are known for being strong, hardy animals with an excellent ability to adapt to different environments.
What Are the Main Characteristics of the Duroc Breed?
★
Appearance
Duroc pigs have reddish skin covered with abundant, smooth hair. Their heads are relatively small, their ears droop forwards to a point, and their hooves are often black.
★
Weight
Male Duroc pigs can weigh up to 350 kg, while females typically reach around 300 kg.
★
Distribution
Although the breed originated in the United States, Duroc pigs are now widely raised both there and across many other countries. Unlike Iberian pigs, which can only be bred on the Iberian Peninsula, Duroc pigs adapt well to different climates and farming systems around the world. They are particularly common throughout Europe.
★
Feeding
Like most white pig breeds, Duroc pigs are generally raised under intensive farming conditions and are fed specially formulated cereal-based feed.
Duroc and Iberian Pigs: The Perfect Crossbreed
The genetic characteristics of Duroc pigs make them the ideal breed to cross with Iberian pigs. A pig born from a Duroc sire and an Iberian dam is classified as 50% Iberian breed, while still retaining the valuable ability to infiltrate fat into the muscle — one of the defining characteristics of jamón ibérico. In these crosses, Duroc pigs are typically used as the fathers, while Iberian pigs are the mothers.
In fact, under the Iberian Quality Standard (Royal Decree 1469/2007 of 2 November), the Duroc is the only white pig breed permitted to be crossed with Iberian pigs, and only up to a maximum of 50%.
Iberian Pig
What Type of Jamón Comes from Duroc Pigs?
The jamón produced from Duroc pigs is jamón serrano, not jamón ibérico. At Enrique Tomás, we call this product "Jamón Gran Reserva".
It's important to understand that any jamón made from white pig breeds such as Duroc is classified as jamón serrano, never jamón ibérico. Although jamón serrano is an outstanding product in its own right, it offers a very different eating experience. The texture and flavour of jamón ibérico are unique thanks to the Iberian pig's natural ability to infiltrate fat into the muscle, creating exceptional richness, aroma and complexity.
Enrique Tomás Jamón Gran Reserva
Before anything else, it's worth explaining why, at Enrique Tomás, we refer to our jamón serrano as Jamón Gran Reserva. We chose this name because it represents the finest non-Iberian jamón available. The white pigs from which it comes are carefully reared and fed to produce an exceptional-quality jamón.
In addition, every piece undergoes a traditional curing process using expertise that has been passed down through generations on the Iberian Peninsula. This is what makes it such a carefully selected product. The only jamón serrano we offer at Enrique Tomás is Jamón Gran Reserva, the highest category of jamón serrano.
Buy Jamón Gran Reserva
The curing process of Duroc Jamón
The curing process used to produce Jamón Serrano from Duroc pork follows exactly the same traditional stages as Jamón Ibérico. The main difference is the curing time. White pigs require fewer months of curing before the meat reaches its optimum quality.
The minimum curing period is usually around seven months, although it can extend to as much as 24 months. Depending on the length of the curing process, we can differentiate the characteristics of the Jamón Serrano into different categories:
“Bodega or Cava”, cured for around 9 months; “Reserva or Añejo”, cured for approximately 12 months; and “Gran Reserva”, those that require more time and for which more than 15 months are needed.
At Enrique Tomás, our Gran Reserva Jamón Serrano undergoes an extended curing period of 18 months, significantly longer than most Jamón Serrano available on the market. The result is one of the finest products in its category, with a richer aroma, deeper flavour and a more refined texture.
Duroc Jamón production and price
Around 90% of all jamón produced worldwide comes from white pig breeds such as Duroc. However, Duroc is not the only white breed used to produce Jamón Serrano. Other breeds, such as Celta pigs, are also used. By contrast, only around 10% of the world's jamón production comes from Iberian pigs. This limited production helps explain why Jamón Ibérico commands a considerably higher price.
The price of Duroc Jamón Serrano varies depending on its curing time. For example, a whole piece of Gran Reserva Jamón, the highest-quality Jamón Serrano category with a curing period of more than 15 months, typically costs around €129.
In summary
Jamón Ibérico comes from pigs native to the Iberian Peninsula that can only be raised in Spain and Portugal. Their unique genetics allow them to infiltrate fat into the muscle, giving the meat its unmistakable texture, marbling and exceptional flavour. Duroc pigs, on the other hand, are white pigs used to produce Jamón Serrano. Their meat delivers outstanding quality and, thanks to careful breeding and traditional curing methods, produces a delicious and highly appreciated jamón.
Now that you know the main characteristics of Duroc Jamón and the pigs it comes from, you're one step closer to becoming a true jamón expert.
And since we're talking about experts, at Enrique Tomás we're passionate specialists in jamón. Discover our outstanding selection of jamón, paleta, cured meats, cheeses and wines, and visit our online shop to buy jamón or paleta in the format that suits you best!


