Perenially packed, this convivial tapas spot has leather banquettes lining the main room but if you want to make friends, opt for the communal table running down the center of the dining room—if you can get a seat. There are a few seats at the bar, too. Fried quail eggs and chorizo on roasted bread are even better than they sound, and the mushroom and ham croquettes are a mainstay. Traditional churros come with a thick hot chocolate for dipping. The original spot in the Flatiron District was so popular it spawned an offshoot in SoHo, at 171 Spring Street.