Champagne

Henry names it exactly on the soundtrack of the film's most famous shot: a bottle sent table-side, unasked for, by the singer Bobby Vinton himself, as Henry and Karen are walked through the kitchen to the best seat in the Copacabana. It's the moment the good life stops being an abstraction and becomes a physical fact — champagne arriving because of who you're with, not what you ordered. Any well-regarded Brut does the job at your own table; the point was never the label, it was that it showed up at all.