A full rib roast contains ribs 6 through 12. Butchers often split this into two sections:
: The highest grade, with "abundant" marbling (intramuscular fat), making it the most tender and flavorful. Only about 2% of beef qualifies. how to buy a prime rib roast
The term "prime rib" typically refers to the cut, not necessarily the USDA grade. A full rib roast contains ribs 6 through 12
: High-quality with moderate marbling. It is the most common grade in grocery stores and offers the best "bang for your buck". with "abundant" marbling (intramuscular fat)