Green Chartreuse is a French herbal liqueur made by the Carthusian monks since the 18th century. It is known for its vibrant green color, which comes from a blend of 130 different herbs, plants, and flowers. The exact recipe is a closely guarded secret, known only to a few monks. With an alcohol content of 55%, Green Chartreuse has a complex flavor profile that is both sweet and herbal, with hints of mint and spices. It is often enjoyed neat, on the rocks, or as an ingredient in various cocktails, making it a popular choice among mixologists.