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
Lemon liqueur proof neutral spirits to extract from it the lemon oil (an essential oil). The extraction is then diluted with simple syrup. Different varieties of lemon are used to produce different flavors. The variety of lemon used is usually dictated by region. Various alcohols can be used to give distinct flavors. A higher proof alcohol maximizes extraction of the lemon flavor, whereas darker alcohols add complexity of flavor. Many commercial brands of lemon liqueur are produced in Italy, in several styles (see Italian liqueur). In Italy, especially in Campania, lemon liqueur is consumed as a chaser ("ammazzacaffè") to coffee. Lemon liqueur