Duroc

Duroc is a 19th-century American heritage breed (developed in New York and New Jersey ~1830-1870) that became internationally important when European producers adopted it as the standard outcross with traditional breeds. The breed has red-brown skin, large frame, and produces meat with good marbling and a rich pork flavor profile. The crucial role: Duroc-cross sows are permitted for 50% Ibérico breeding programs in Spain (the lower DOP tier) and are widely used as the maternal line for Italian Parma-DOP-spec pork production (the DOP-approved breeds include Duroc among the permitted outcross options).

So while Duroc isn't itself a charcuterie-specific breed, the breed's genetic contribution to the world's most famous cured-pork programs makes it editorially significant. Pure-Duroc cured meats also exist (some American craft producers use it directly) but it's most often encountered as one parent of the genetic line.