Xerta, a restaurant in Barcelona, sits in the L’Antiga Esquerra de l’Eixample neighborhood of the city. (Courtesy of Xerta) By Orge Castellano July 15, 2022 MADRID ( JTA ) — The typical menu at Xerta, a Barcelona restaurant that earned a coveted star from the Michelin Guide, reads like a haute-cuisine treyf banquet : non-kosher dishes such as lobster, squid and oysters. Yet the restaurant has become a hotspot for Barcelona’s small number of kosher-keeping Jews. That’s because with a little advance notice, Xerta will prepare food according to Jewish dietary laws in a separate kitchen, under the supervision of...