Creme de Noyaux is an almond-flavored crme liqueur made from apricot kernels, which also flavor the better-known, brandy-based amaretto. It may also be made from the almond-shaped kernels contained within peach pits. Both Bols and Hiram Walker produce artificially colored red versions of the liqueur (either of which contribute the pink hue to Pink Squirrel cocktails) while Noyau de Poissy from France is available in both clear (blanc) and barrel-aged amber (ambre) versions. The name comes from the French noyau: 'kernel, pit, or core'. It is an ingredient in the Fairbank cocktail, the Pink Squirrel cocktail and in a cocktail called Old Etonian.
Contributions by Smacky63, Metrometro, and Chinasaur.