Prime rib is traditionally prepared by rubbing the outside of the roast with a mixture of seasonings, then roasting it under dry heat for 2-3 hours, depending on the size. It can also be grilled, smoked, or cooked on a rotisserie, but these options are less common. The results are a tender and delicious cut of meat. There is no specific way to serve prime rib — the English serve it with Yorkshire pudding, the French serve it au jus, and in the United States it is most often served with horseradish.