The Prime Grade is the highest grade of American beef, only about 2-3% of the beef cattle can be classified as the prime grade.
The word "PRIME" is a quality grade assigned by the U.S. Department of Agriculture to describe the highest quality beef, in terms of tenderness, juiciness, and flavor.
Short Rib comes from the cut of beef brisket, chuck, plate, or rib areas, which is one of the most popular cuts of beef for Japanese barbecue.
Tender and very juicy, it has more marbling than roast cuts do. Other than barbecue, this cut is suited for steaks, shabu-shabu (sliced meat parboiled with vegetables), and sukiyaki (hot pot stew).
"Prime" beef is produced from young, well-fed beef cattle. It has abundant marbling (the amount of fat interspersed with lean meat), and is generally sold in restaurants and hotels.
"Choice" beef is high quality, but has less marbling than "Prime". "Select" beef is very uniform in quality and normally leaner than the higher grades.