What is a popular accompaniment to the prime rib?

Au jus is a popular accompaniment to prime rib because it enhances the natural flavor of the meat and adds moisture. Made from the juices that drip from the prime rib during cooking, au jus is typically seasoned broth that complements the rich, savory taste of the beef. It can be served in a small bowl for dipping or poured over the meat to elevate the dining experience.

The other options, while they may have their culinary uses, do not traditionally pair with prime rib in the same way. Barbecue sauce tends to be associated with grilled or smoked meats rather than elegant cuts like prime rib. Mustard can sometimes be served with beef but is more commonly associated with sandwiches and deli meats. Honey glaze, typically used for dishes that require a sweet component, does not align with the rich, savory profile of prime rib. Therefore, au jus stands out as the ideal and classic companion for this dish.