According to the USDA, the leanest cuts of beef are those labeled as "extra lean" and "lean". The leanest cuts of beef are those that contain less than 5 grams of total fat per 3.5-ounce serving, and less than 2 grams of saturated fat per 3.5-ounce serving. Here are some of the leanest cuts of steak:

• Sirloin tip side steak: This cut is known for being one of the leanest cuts, with about 5 grams of fat per serving.
• Top round steak: This cut comes from the rump of the cow, where a lot of its movements are generated, naturally leaving little fat on the muscle. It has 7.5 grams of fat per 3.5-ounce serving.
• Eye of round steak: This cut has some of the lowest fat content, usually receiving an "extra lean" designation. It has 7 grams of fat per 3.5-ounce serving.

Its important to note that the flavor and tenderness of these cuts may vary, and some may require special preparation methods to achieve optimal taste and texture. If youre unsure about which cuts of beef are lean or extra lean, ask your butcher or grocer for recommendations.