Why the tenderloin is the most prized and tender cut of the cow

Food & Drink · Published 3 October 2026 Swipe more like this →

In short: Tucked beneath the ribs and along the backbone, the psoas major muscle performs almost no physical labor. This inactivity makes it the softest, most delicate portion of the entire animal. Understanding how to navigate its distinct sections—from the thick butt to the slender tail—is the secret to mastering high-end beef.

The beef tenderloin, recognized as an eye fillet or simply fillet in various regions, is anatomically positioned ventral to the lumbar vertebrae. Because this muscle remains largely dormant throughout the animal's life, it lacks the connective tissue found in harder-working cuts, resulting in an exceptionally tender texture. Its oblong shape bridges two primary regions: the short loin and the sirloin, with the muscle tapering from a narrow point into a substantial, rounded end.

When purchasing a whole tenderloin, you will encounter different levels of preparation. An unpeeled cut retains both its exterior fat and the tough connective tissue known as silver skin. Peeled versions have the fat trimmed away, while PSMO options—or peeled, side muscle on—keep the attached chain muscle intact. Because of its superior tenderness, this cut is the preferred choice for preparations that rely on raw or lightly cooked meat, such as steak tartare or thinly sliced carpaccio.

The muscle is divided into three distinct zones, each suited for different culinary applications. The widest portion, or butt, is ideal for carpaccio because of its generous diameter. The middle section offers the most consistent thickness, making it perfect for portion-controlled steaks like filet mignon or classic preparations such as Beef Wellington and Chateaubriand. Finally, the pointed tail is often too small for a standard steak portion. Instead, chefs typically use this end for tournedos, which are small, round medallions often wrapped in bacon or lard to introduce extra fat and richness to the lean meat.

Mastering this cut requires recognizing that the tenderloin is not uniform. Attempting to slice a whole tenderloin into steaks of equal weight will result in uneven portions if you do not account for the natural taper of the muscle. By selecting the correct section for your specific recipe, you ensure that every serving maintains the ideal balance of texture and size that defines this premium cut of beef.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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