Fill a shaker with ice cubes. Add cognac, dark cacao liqueur and cream. Shake and strain into a chilled cocktail glass. Add nutmeg.
There are many rumors about its origins. It was supposedly created at the time of the wedding of Princess Mary and Viscount Lascelles, in London, in 1922. However, the drama critic and Algonquin Round Table member Alexander Woollcott claimed that it was named after him. Other stories say it was named after the Russian tsar, Alexander II.