Outside Round vs Skirt — What's the Difference?
Quick Answer
Outside Round (bottom round (outside round)) and Skirt (skirt steak) are not the same cut: Outside Round is round primal (Outer thigh of the hindquarter); Skirt is plate primal (diaphragm (inside/outside skirt varies by spec)).
Canonical entities: Outside Round · Skirt
Side-by-side
| outside round | skirt | |
|---|---|---|
| Primal | round | plate |
| Muscle / location | Outer thigh of the hindquarter | diaphragm (inside/outside skirt varies by spec) |
| Character | From the outer thigh (biceps femoris). Leaner and less tender than inside round. Used for roasts, rouladen, and ground beef. Often sold as bottom round roast or eye of round. | Plate primal diaphragm muscle; very beefy, used for fajitas and grilling. |
Key differences
- Different primals: round vs plate.
- 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
Outside Round
Pick Outside Round when you want its specific marbling/texture profile: From the outer thigh (biceps femoris). Leaner and less tender than inside round. Used for roasts, rouladen, and ground beef. Often sold as bottom round roast or eye of round.
Skirt
Pick Skirt when its primal/muscle traits fit the dish: Plate primal diaphragm muscle; very beefy, used for fajitas and grilling.
Outside Round and Skirt are different canonical muscles/primals: Outside Round is round (Outer thigh of the hindquarter); Skirt is plate (diaphragm (inside/outside skirt varies by spec)).
Choose based on tenderness, marbling, grain direction, and how you plan to cook (sear vs braise vs slice thin).
Read the full guides: outside round (what-is) · skirt (what-is) · outside round hub · skirt hub