Parfait d'Amour is a liqueur. It is often used in cocktails primarily for its purple colour, and is generally created from a Curacao liqueur base.
Parfait d'Amour appears to have several forms. The House of Lucas Bols in the Netherlands claims to have originated the liqueur. Their version appears to be a curacao base, flavoured with rose petals, vanilla and almonds. Marie Brizard, a Bordeaux based distiller, has a product with a similar flavor profile. Another form, produced by DeKuyper, uses a spirit as its base, and is flavoured with lemon, coriander and violets.