The same triangular tail of the bottom/top sirloin. Maminha is the Brazilian churrasco cut; tri-tip is the US (Santa Maria) name. Same muscle, different tradition.
Translation takeaway
These are near equivalents in the way butchers and cooks use them. If you can source either one, you're very close to the same result.
Keep Maminha and Tri-tip together in your notebook.
Names by country
| Country | Maminha | Tri-tip |
|---|---|---|
| 🇺🇸United States | — | Tri-tip |
| 🇬🇧United Kingdom | — | Tri-tip |
| 🇪🇸Spain | — | Rabillo de cadera |
| 🇦🇷Argentina | — | Colita de cuadril |
| 🇲🇽Mexico | — | Tri-tip |
| 🇧🇷Brazil | Maminha | — |
| 🇮🇹Italy | — | Spinacino |
| 🇩🇪Germany | — | Bürgermeisterstück |