Though this is more a dessert than a drink, it is quite liquid and contains alcohol - could this be it? I think you could drink it. There is a French (Sabayon) and an Italian (Zabaglinoe) version, and I've only ever heard/seen these names used in the UK.

"From the heartland of Colombia comes sabajón, an egg-based creamy cocktail that's so rich it can be served as a dessert. Its origins can be traced to France, Spain and Italy, where it was known as zabaglione and prepared with sweet Marsala wine."

http://en.wikipedia.org/wiki/Zabaglione

It's actually not a liqueur, but rather a dessert made from liqueur - but it could be what you are looking for. Perhaps in this context they're referring to a prepared product called "zabaglione" consisting of liqueur and the other ingredients.

Zabaione (written also Zabajone... or Zabaglione ...) is an Italian dessert made with egg yolks, sugar, a sweet liquor (usually Marsala wine), and sometimes one of cream, mascarpone, or whole eggs. It is a very light custard, which has been whipped to incorporate a large amount of air. Zabaglione is traditionally served with fresh figs... In Colombia, it's known as ***sabajón***. In Venezuela, a related egg-based dessert drink is called ponche de crema.

--------------------------------------------------
Note added at 21 mins (2008-07-18 22:27:20 GMT)
--------------------------------------------------

TYPO:

The second paragraph above ("Zabaione...ponche de crema") should be IN QUOTATION MARKS, as it was the actual quote from wikipedia.

my guess is that this is probably what they mean, since this is about drinks rather than desserts. Both the drink and the dessert are based on egg yolks, so that would explain the "borrowing" of the culinary term.

As well as the most well known of egg liqueurs (advocaat), there are of course other lesser known ones (believe it or not!)

___

The Webtender: AdvocaatAdvocaat is a liqueur made from a rich and creamy blend of egg yolks, aromatic spirits, sugar and brandy with a hint of vanilla. ...
www.webtender.com/db/ingred/111 - 7k - Cached - Similar pages

Cordial & Liqueur Recipes"EGG LIQUEUR"~ This drink comes from the Netherlands. It is similar to Advocaat. Advocaat is a Dutch word meaning "A drink for Lawyers". ...
www.angelfire.com/wy/DaBoozer/liqueurs.html - 26k - Cached - Similar pages

Belgian Bottle Label Egg Liqueur “Advokaat”, c.1920s - VC3015This gorgeous little piece of art is an authentic, original bottle label that has never been used and has no glue on the back.
www.rubylane.com/shops/vintagecravings/item/VC3015 - 27k - Cached - Similar pages

Homemade Advocaat Egg Liqueur RecipeHomemade Advocaat Egg Liqueur Recipe - ... Homemade Advocaat Egg Liqueur #284098. by Dreamer in Ontario. posted on Feb 3, 2008 ...
www.recipezaar.com/284098 - 16k - Cached - Similar pages

Eierliquor, German recipesIf egg liqueur is too thick, add some more boiled and cooled milk. Egg liquor is thicker than the typical eggnog. Fill into wide-neck bottle, ...
www.sheries-kitchen.com/recipes/german/eierliquor.htm - 2k - Cached - Similar pages

Analytica Chimica Acta : Rapid determination of alcoholic strength ...For the highly difficult matrix of an egg liqueur, this method is restricted, ... Rebelein showed that, for egg liqueur, eight times of rinsing the pipette ...
linkinghub.elsevier.com/retrieve/pii/S0003267005000425 - Similar pages

Egg Liqueur - Absolut DrinksAdvocaat, or Advokaat, is a brandy-based egg liqueur. It gets it's very characteristic flavor from egg yolk, sugar, and vanilla. There is a Mexican version ...
absolutdrinks.com/ingredient/egg-liqueur.aspx - 39k - Cached - Similar pages

Egg liqueur connoisseur package - PROMANGI Essen und Trinken ...Egg liqueur (niederdeutsch Klötenköm or Klütenkööm) since the'50s in Germany ... Our supplier put the egg liqueur after Hausfrauenart with fresh eggs from ...

Eggnog usually called rompope in C. sounds like they are using sabajon to genericise