Chartreuse (liqueur) Army engineers to relocate and rebuild it at a location near Voiron where the monks had previously set up a distribution point. After World War II, the government lifted the expulsion order, making the Carthusian brothers once again legal French residents. Today, the liqueurs are produced in Voiron using the herbal mixture prepared by two monks at Grande Chartreuse. They are the only ones to know the secret recipe. The marketing, bottling, packaging, management of the distillery and tours are done by "Chartreuse Diffusion", a company created in 1970. Other related alcoholic beverages are manufactured in the same distillery (e.g.
Maple liqueur taste. The process of making maple liqueur is simple. Equal parts rye whiskey and maple syrup are combined in a sealable mason jar, mixed thoroughly and then left to sit in the refrigerator for at least two weeks. Other spices and ingredients can be added to give different flavors to the liqueur, such as glycerin, honey, or brown sugar. As is with standard aging processes, generally, the longer the liqueur is left to age, the better the final product. After this, the liqueur is ready to be consumed. As mentioned previously, commercially produced maple liqueurs are not very common due