Prime:
In the culinary arts, the word marbling refers to white flecks and streaks of fat within the lean sections of meat. Marbling is so named because the streaks of fat resemble a marble pattern. Also called intramuscular fat, marbling adds flavor and is one of the main criteria for judging the quality of cuts of meat. In general, the more marbling it contains, the better a cut of meat is.
AAA+:
Unlike Prime, AAA-grade beef has only small amounts of visible marbling. Yet like Prime, the AAA grade is a very high quality category that will provide a juicy, tender cut of beef that is resilient in a variety of cooking methods. Up to 50% of graded beef reaches AAA quality and status.

