The photo is chorizo, which is sirloin. The other cuts I would order are ojo (rib eye) and lomo (fillet). I ate steak nearly everyday over four weeks and it was all great.

Steaks are also reliably good in Argentina. I went to Parilla Cero5 as it was close to the hotel I based myself in when in Buenos Aires between flights across the country. In Salta I praised the steak to the waiter and got free wine in return! Everywhere between Salta and Ushuaia had great steaks. I was disappointed in one famous but tourist restaurant in Retiro; they have some fancy cuts and one I had was lacking somewhat. Still good mind you!