I was just reading through posts from November 2008 on the subject of Egg Creams being a uniquely New York beverage. I certainly remember an egg cream and a pretzel rod as a great treat. I posted the following question on that neighborhood thread but not sure it's still active, so here goes again:
Is there such a thing as a vanilla egg cream?
(On the subject of memory, I remember the phrase "Unique New York" as one of the easier tongue twister challenges from the weekly Sonny Fox / Wonderama Show on Sunday mornings, along with the more difficult "Rubber Bumper Baby Buggy".)