Denver Steak vs Flap Steak — What's the Difference?
Quick Answer
Denver Steak (denver steak) and Flap Steak (flap steak (sirloin flap)) are not the same cut: Denver Steak is chuck primal (Serratus ventralis muscle, extracted from under the blade bone); Flap Steak is sirloin primal (Bottom sirloin, obliquus internus abdominis muscle).
Canonical entities: Denver Steak · Flap Steak
Side-by-side
| denver steak | flap steak | |
|---|---|---|
| Primal | chuck | sirloin |
| Muscle / location | Serratus ventralis muscle, extracted from under the blade bone | Bottom sirloin, obliquus internus abdominis muscle |
| Character | A modern butchery innovation — the denver steak was 'discovered' in 2009 by meat scientists at the University of Nebraska. Extracted from the serratus ventralis muscle in the chuck, it's surprisingly tender and well-marbled for a chuck cut. An affordable alternative to ribeye with similar marbling patterns. | 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. |
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
Denver Steak
Pick Denver Steak when you want its specific marbling/texture profile: A modern butchery innovation — the denver steak was 'discovered' in 2009 by meat scientists at the University of Nebraska. Extracted from the serratus ventralis muscle in the chuck, it's surprisingly tender and well-marbled for a chuck cut. An affordable alternative to ribeye with similar marbling patterns.
Flap Steak
Pick Flap Steak when its primal/muscle traits fit the dish: 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.
Denver Steak and Flap Steak are different canonical muscles/primals: Denver Steak is chuck (Serratus ventralis muscle, extracted from under the blade bone); Flap Steak is sirloin (Bottom sirloin, obliquus internus abdominis muscle).
Choose based on tenderness, marbling, grain direction, and how you plan to cook (sear vs braise vs slice thin).
Read the full guides: denver steak (what-is) · flap steak (what-is) · denver steak hub · flap steak hub