The Brandy Alexander was a darned popular drink when I was working Upper East Side bars in Manhattan during the ’70s, and when carefully crafted, it can be a quality quaff. But where did it come from?

It’s obviously a pimped-out version of the classic—but largely forgotten—Alexander cocktail and mixes brandy instead of gin with creme de cacao and cream. But whoever eighty-sixed the British gin and welcomed the French cognac to the party is, I believe, lost to history.

One of the earliest known printed recipes for the Alexander can be found in Hugo Ensslin’s 1916 book “Recipes for Mixed Drinks.” The cocktail, according to historian Barry Popik, was likely born at Hotel Rector, New York City’s premier pre-Prohibition lobster palace. The bartender there, a certain Troy Alexander, created his eponymous concoction in order to serve a white drink at a dinner celebrating Phoebe Snow.

Phoebe Snow, I should explain, was a fictitious character used in an advertising campaign for the Delaware, Lackawanna and Western Railroad. The company wanted to get the message across that it powered its locomotives with anthracite, a clean-burning variety of coal. The ads emphasized this by showing Ms. Snow traveling while wearing a snow-white dress.

Référence:
https://www.liquor.com/recipes/brandy-alexander/