what is the difference between prime rib and standing rib roast?
Prime rib can be either a steak sliced from the roast or the entire roast. ... The standing rib roast must have come from at least 2 of the ribs. A rib eye roast is a standing rib roast with the ribs removed. The prime rib (standing rib roast or steak cut from that area) is actually not required to be USDA prime beef.