Zortziko

Black-truffle and cod soup with squid-ink ice cream; plankton ravioli with apple-pepper gel; smoked hake cheeks with turmeric and watermelon jelly; spiced rack of lamb with anchovy sponge cake; and a chocolate sphere with almond soil and rhubarb dust are just some of the highly technical creations on this elegant Michelin-starred restaurant's no-choice tasting menus. Book well ahead.