In an American TV show called 'Gossip Girl', here's a narration by Gossip Girl herself (YouTube video):
Long ago, when European royals grew bored with palace balls they took a page from the peons, and added some pageantry. Couture and canapé are just another Saturday night until you add a mask. But preparing for a ball is an event in itself. Which is why queens invented handmaidens.
Couture is a non-count noun, so it can be used without any determiner, but why is the count noun canapé in the singular without any determiner? Should it be in the plural as follows?
Couture and canapés are just another Saturday night until you add a mask.
Is this simply a mistake on the part of writer and/or narrator? Or is there any legitimate reason for this?