The recipe is a mystery to all but a handful of the the Carthusian monks responsible for creating this wonderful liqueur. Of course, we are unable to reveal the entire mystery of what goes into Chartreuse but we will be able to explore the many secrets and bountiful history of this liqueur. Chartreuse Liqueur is one of the few spirits that ages after bottling. In some cases, for the better. More and more, people are searching for older bottles of Chartreuse; searching online, in rural liquor stores, even at estate sales. We will discuss a little bit about what causes this aging process as we sip on bottles found in back of the liquor cabinets. We will also take a look at the other special Chartreuse types the monks have created. . These Chartreuse types are sold only to elite restaurateurs in France and surrounding areas. And finally, we would be remiss not to speak about the Carthusian life and what effects it has played on the liqueur itself.