Flat Iron vs Shoulder Clod — What's the Difference?
Quick Answer
Flat Iron (flat iron steak) and Shoulder Clod (shoulder clod) are not the same cut: Flat Iron is chuck primal (Infraspinatus muscle, top blade of the shoulder clod); Shoulder Clod is chuck primal (Upper shoulder, above the arm and outside the blade).
Canonical entities: Flat Iron · Shoulder Clod
Side-by-side
| flat iron | shoulder clod | |
|---|---|---|
| Primal | chuck | chuck |
| Muscle / location | Infraspinatus muscle, top blade of the shoulder clod | Upper shoulder, above the arm and outside the blade |
| Character | The second most tender muscle on the entire animal, after the tenderloin. A flat, rectangular steak extracted from the top blade by splitting it along the central connective tissue. Uniform thickness makes it ideal for grilling. Also known as butler's steak in the UK. | A large, lean muscle group from the outer shoulder. Contains the flat iron (infraspinatus) and petite tender (teres major) as sub-cuts. Often sold as shoulder roast or clod steaks. |
Key differences
- 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
Flat Iron
Pick Flat Iron when you want its specific marbling/texture profile: The second most tender muscle on the entire animal, after the tenderloin. A flat, rectangular steak extracted from the top blade by splitting it along the central connective tissue. Uniform thickness makes it ideal for grilling. Also known as butler's steak in the UK.
Shoulder Clod
Pick Shoulder Clod when its primal/muscle traits fit the dish: A large, lean muscle group from the outer shoulder. Contains the flat iron (infraspinatus) and petite tender (teres major) as sub-cuts. Often sold as shoulder roast or clod steaks.
Flat Iron and Shoulder Clod are different canonical muscles/primals: Flat Iron is chuck (Infraspinatus muscle, top blade of the shoulder clod); Shoulder Clod is chuck (Upper shoulder, above the arm and outside the blade).
Choose based on tenderness, marbling, grain direction, and how you plan to cook (sear vs braise vs slice thin).
Read the full guides: flat iron (what-is) · shoulder clod (what-is) · flat iron hub · shoulder clod hub