Petite Tender vs Sirloin Flap — What's the Difference?
Quick Answer
Petite Tender (petite tender (teres major)) and Sirloin Flap (sirloin flap) are not the same cut: Petite Tender is chuck primal (Teres major muscle, tucked alongside the shoulder blade); Sirloin Flap is sirloin primal (sirloin flap / bottom sirloin flap).
Canonical entities: Petite Tender · Sirloin Flap
Side-by-side
| petite tender | sirloin flap | |
|---|---|---|
| Primal | chuck | sirloin |
| Muscle / location | Teres major muscle, tucked alongside the shoulder blade | sirloin flap / bottom sirloin flap |
| Character | A small, narrow muscle from the shoulder that resembles a miniature tenderloin in shape and tenderness. Only about 250-350g per side, making it one of the lowest-yield cuts on the animal. Extremely tender but relatively unknown outside professional kitchens. | Thin, loose-grained flap from the bottom sirloin; overlaps skirt/flank in some regional breakdowns. |
Key differences
- Different primals: chuck vs sirloin.
- Texture and slicing: compare fibrous, grain-heavy cuts vs more tender steak-style muscles based on each cut’s description.
- Retail naming diverges by country—always map through a canonical cut when translating menus or labels.
When to use each
Petite Tender
Pick Petite Tender when you want its specific marbling/texture profile: A small, narrow muscle from the shoulder that resembles a miniature tenderloin in shape and tenderness. Only about 250-350g per side, making it one of the lowest-yield cuts on the animal. Extremely tender but relatively unknown outside professional kitchens.
Sirloin Flap
Pick Sirloin Flap when its primal/muscle traits fit the dish: Thin, loose-grained flap from the bottom sirloin; overlaps skirt/flank in some regional breakdowns.
Petite Tender and Sirloin Flap are different canonical muscles/primals: Petite Tender is chuck (Teres major muscle, tucked alongside the shoulder blade); Sirloin Flap is sirloin (sirloin flap / bottom sirloin flap).
Choose based on tenderness, marbling, grain direction, and how you plan to cook (sear vs braise vs slice thin).
Read the full guides: petite tender (what-is) · sirloin flap (what-is) · petite tender hub · sirloin flap hub