Chartreuse (liqueur) liqueurs such as Galliano, Liquore Strega or Kräuterlikör, though it is distinctively more vegetal. Like other liqueurs, its flavour is sensitive to serving temperature. If straight, it can be served very cold, but is often served at room temperature. It is also featured in some cocktails. Some mixed drink recipes call for only a few drops of Chartreuse due to the assertive flavour. It is popular in French ski resorts where it is mixed with hot chocolate and called Green Chaud. According to tradition, a marshal of artillery to French king Henry IV, François Hannibal d'Estrées, presented the Carthusian monks
Portrait of a Carthusian the artist’s signature (the fly’s position right next to ‘Petrus ΧΡΙ Me Fecit’ hinting that the fly might be the referent of ‘me’ rather than the painting.) "Portrait of a Carthusian" featured a halo above the monk’s head when it was acquired by the Metropolitan Museum of Art in 1944. However, halos are extremely rare in Early Netherlandish painting and the one in "Portrait of a Carthusian" has long been an object of speculation. Finally in 1994, in preparation for the Met’s exhibition "Petrus Christus: Renaissance Master of Bruges", the authenticity of halo was publicly examined by a panel of