Just before leaving for DF, I met Nacho and Felipe of X'Tiosu, at the suggestion of mutual friend Xochitl. Their Zapotec-Lebanese taco-stand dishes are served through a window on a lot with a Metro PCS store. We were scrambling looking for last-minute food vendors for the Fuerza Mexico fundraiser.
The brothers basically surmised they couldn't participate, because they were such a new operation, and had to man their shop at open hours with discipline. I respected that, thanking them. Before going of course I had to try something.
Off the top of the carta, why not -- their chicken #shawarma taco on the fly, and: confirmed. They're really good. Gotta go try and errything.