A white candy created in 1893 by confectioner Daumesnil, in Chartres (Eure-et-Loir), to celebrate the French-Russian alliance.
Yummy! It's a chocolate with sugared almonds coat and an icing flavoured with vanilla (the famous "Swiss meringue", meringue suisse).
Mentchikoff is a Russian name, isn't it? Alexandre Danilovitch Menchikov (1672-1729) was, in the reign of Peter the Great, governor of Saint-Petersburg, prince of the Russian Empire, general... before they sent him in exile in Siberia. They said he was a pastrycook’s son and a pastrycook himself when he was young!