loin primal · China
In West Bengal, this cut is undercut wb, also sold as naram wb, buffalo undercut wb.
About this cut
Most tender muscle of the loin; center cuts often sold as filet mignon.
| rare | San fen shu | → | Rare |
| medium rare | Wu fen shu | → | Medium rare |
| medium | Qi fen shu | → | Medium |
| well done | Quan shu | → | Bhalo bhabe rana |
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.
“niu liu” in China maps to canonical tenderloin (loin: psoas major). In West Bengal, look for labels such as undercut wb · naram wb · buffalo undercut wb. Most tender muscle of the loin; center cuts often sold as filet mignon.
This information is for educational purposes only and may vary by region or butcher practices.