Which steak cut is known as the leanest and most tender?

The Dallas filet is recognized as the leanest and most tender cut among the options given. This cut is derived from the tenderloin, which is a muscle that does very little work throughout the animal’s life, resulting in its tenderness. The fact that it is lean means it has less fat marbling compared to other cuts, contributing to a more delicate flavor and texture. This makes the Dallas filet particularly desirable for those who enjoy a tender steak without the additional richness that comes from higher fat content.

In comparison, while the USDA choice sirloin is a quality cut, it is typically not as tender as the Dallas filet. The Ft. Worth ribeye is known for its rich marbling and flavor but has a higher fat content, resulting in a less lean profile. The New York strip strikes a balance between tenderness and flavor but still doesn't match the leanness or tenderness of the Dallas filet.