chuck primal · South Korea
In Argentina, this cut is flat iron.
About this cut
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.
| rare | Re-eo | → | Jugoso |
| medium rare | Mi-di-eom re-eo | → | A punto |
| medium | Mi-di-eom | → | Cocido |
| well done | Wel-deon | → | Bien cocido |
Doneness terminology varies by country and restaurant. When unsure, describe what you want — e.g., “warm red center” — rather than relying on the name alone.
“buchaesal” in South Korea maps to canonical flat iron (chuck: Infraspinatus muscle, top blade of the shoulder clod). In Argentina, look for labels such as flat iron. 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.
This information is for educational purposes only and may vary by region or butcher practices.