derives from lamb sub-primal cut lamb leg lamb sirloin half 2023-08-01T21:30:23Z https://www.ams.usda.gov/sites/default/files/media/Lamb_IMPS200Series_2022.pdf https://orcid.org/0000-0001-5275-8866 A lamb leg half that is derived from a whole leg. The anatomical location is the “Half” that comes from the Pelvic region of the Leg known as the Sirloin. The half includes the center section with muscles from the bottom, eye, tip, and top. ready for release