Recommended by Nick's friends (particularly for the chuleton steaks).
"“It’s a very small, old-style bar,” says food expert José Luis Galiana, “where you get tomatoes, pimientos, chops and chorizo. That’s it. But it’s very de moda,” he continues with enthusiasm, “and always full because the tomato is 10 out of 10. The pimiento is 10 out of 10. You have to stand at a bar to eat the chops: there is only one table. You can reserve it, but you would have to do it six months in advance. And at 1pm and 8pm they bring out one tortilla – only one. You only get a piece if you’ve come early and ordered it in advance. It’s pure magic.” Several local chefs concur; everyone has a soft spot for Néstor, which despite its fame and ever-increasing numbers of visiting tourists remains a quirky (and tiny) local hangout."
— The Guardian article
> "Bar Nestor’s fabled Spanish tortillas (essentially omelettes stuffed with chunks of soft potatoes and caramelized onions) are only served twice a day at 1 p.m. and 8 p.m. Arrive early to place your name down and reserve a slice, but make sure you return on time before someone else snatches up your piece. While you’re at it, stick around for a plate of sweet tomatoes drenched in olive oil with a generous sprinkling of salt—so simple, yet so delicious."