Flap Steak vs Short Ribs — What's the Difference?
Quick Answer
Flap Steak (flap steak (sirloin flap)) and Short Ribs (short ribs) are not the same cut: Flap Steak is sirloin primal (Bottom sirloin, obliquus internus abdominis muscle); Short Ribs is rib primal (Lower portion of ribs 6–8 (plate short ribs) or ribs 1–5 (chuck short ribs)).
Canonical entities: Flap Steak · Short Ribs
Side-by-side
| flap steak | short ribs | |
|---|---|---|
| Primal | sirloin | rib |
| Muscle / location | Bottom sirloin, obliquus internus abdominis muscle | Lower portion of ribs 6–8 (plate short ribs) or ribs 1–5 (chuck short ribs) |
| Character | A thin, coarse-grained steak from the bottom sirloin. The American name for what the French call bavette d'aloyau. Open grain absorbs marinades extremely well. Popular for fajitas, stir-fry, and carne asada. Often confused with skirt steak but from a different location entirely. | Sections of rib bone with attached intercostal meat. Cut two ways: English style (between the bones, thick) or flanken/cross-cut (across the bones, thin strips). Rich, collagen-heavy meat ideal for braising, grilling (flanken), or smoking. |
Key differences
- Different primals: sirloin vs rib.
- 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
Flap Steak
Pick Flap Steak when you want its specific marbling/texture profile: A thin, coarse-grained steak from the bottom sirloin. The American name for what the French call bavette d'aloyau. Open grain absorbs marinades extremely well. Popular for fajitas, stir-fry, and carne asada. Often confused with skirt steak but from a different location entirely.
Short Ribs
Pick Short Ribs when its primal/muscle traits fit the dish: Sections of rib bone with attached intercostal meat. Cut two ways: English style (between the bones, thick) or flanken/cross-cut (across the bones, thin strips). Rich, collagen-heavy meat ideal for braising, grilling (flanken), or smoking.
Flap Steak and Short Ribs are different canonical muscles/primals: Flap Steak is sirloin (Bottom sirloin, obliquus internus abdominis muscle); Short Ribs is rib (Lower portion of ribs 6–8 (plate short ribs) or ribs 1–5 (chuck short ribs)).
Choose based on tenderness, marbling, grain direction, and how you plan to cook (sear vs braise vs slice thin).
Read the full guides: flap steak (what-is) · short ribs (what-is) · flap steak hub · short ribs hub