Chartreuse (liqueur) processes and the same secret formula as the traditional liqueur, and by extra long aging in oak casks it reaches an exceptional quality. Chartreuse VEP comes in both yellow and green. Élixir Végétal de la Grande-Chartreuse (138 proof or 69% – also 142 proof or 71%) has the same base of about 130 medicinal and aromatic plants and flowers but is more alcoholic. It can be described as a cordial or a liqueur, and is claimed to be a tonic. Sold in small wood-covered bottles. Liqueur du 9° Centenaire (47%) was created in 1984 to commemorate the 900 year anniversary
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