That's right: Everyone's favorite imported-from-NYC burgertorium has, just like the rest of the world – tyvm, GRRM
– come down with a case of Game of Thrones
tie-in fever. So now you can get this "prime example of the Wall-to-Table movement. Custard is frozen with packed snow harvested beyond the Wall and hand-churned by members of the Night’s Watch. Final prep occurs in Winterfell, where the shake is topped with shards of Dragonglass imported from the caves of Dragonstone. Please note that supplies are limited as the Wall is currently undergoing major renovations." Unquote. Q'pla!
(Oh, wait – sorry, wrong fandom