100% Grass Fed & Finished beef standing rib roast, also known as prime rib, is a cut of beef from the primal rib, typically featuring two to seven ribs. While grass-fed beef tends to be leaner, it still has some marbling (intramuscular fat), which contributes to its tenderness and flavor. Standing rib roasts are typically roasted whole, and the bones help to create a natural roasting rack, allowing for even cooking. This can also serve as great holiday meal centerpiece.