The grande dame of Zaragoza dining, Casa Lac opened in 1825 and is reputedly Spain's oldest licensed restaurant. The cuisine today is tastily contemporary whether you go for 'gastro-tapas', a set menu (there's a vegetarian option) or à la carte. The ground-floor bar is smart but relatively casual; an elegant staircase leads to the slightly more formal upstairs dining room (reservations advised).
Dishes range from inventive combinations, like a tapa of ham-stuffed chard with a mushroom velouté sauce, to the more traditional 12-hour-roasted shoulder of lamb. If you just want a taster, try the €9 three-tapas offer – smallish quantities but delicious flavours.