Chartreuse is a French herbal liqueur available in green and yellow versions that differ in taste and alcohol content. The liqueur has been made by Carthusian monks since 1737 according to instructions set out in a manuscript given to them by François Annibal d'Estrées in 1605. It was named after the monks' Grande Chartreuse monastery, located in the Chartreuse Mountains north of Grenoble. Today the liqueur is produced in their distillery in nearby Aiguenoire. It is composed of distilled alcohol aged with 130 herbs, plants and flowers.

A liqueur is an alcoholic drink composed of spirits and additional flavorings such as sugar, fruits, herbs, and spices. Often served with or after dessert, they are typically heavily sweetened and un-aged beyond a resting period during production, when necessary, for their flavors to mingle.