Unlike food, an opened spirit does not "go bad" and never becomes dangerous to drink. The real risk lies elsewhere: the oxygen that enters the bottle as soon as it is opened eventually diminishes the aromas, much like a perfume that loses its intensity over time. So it’s not a question of safety, but of tasting pleasure.
The principle to remember above all else
The more a bottle empties, the more air there is inside, and the faster oxidation progresses. A bottle that is three-quarters full will therefore last much better over time than a nearly empty bottle. Light also plays a role, especially UV light, which damages aromatic compounds faster than air itself. Two simple reflexes already change a lot: store the bottle upright, away from direct light, and if it is well opened, transfer it to a smaller container to reduce the amount of air in contact with the liquid.
Armagnac: the most patient of the range
Thanks to its high alcohol content, Armagnac keeps very well once opened, generally between six months and two years depending on the fill level, and sometimes much longer under good conditions. A young single grape variety, more direct on the palate, tolerates being opened for a while. An older and more complex Armagnac, on the other hand, is best consumed within the year following opening, to enjoy its aromatic finesse before it fades.
Absinthe and pastis: alcohol levels that protect well
Absinthe and pastis have an alcohol content of 45% and 58%, a level that significantly limits oxidation. An opened bottle can therefore easily last several months, even over a year, without notable change. The only real point of caution concerns the plants (anise, fennel, grande absinthe), which are sensitive to light and heat: a bottle left in direct sunlight on a shelf will lose its aromas faster than a bottle stored in a cool cupboard.
Floc de Gascogne: the special case of the range
It is the most fragile product once opened, and it deserves special attention. With a much lower alcohol content than the others, between 16 and 18%, Floc de Gascogne is closer to a fortified wine than to a spirit. Once the bottle is opened, it should be stored in the refrigerator, between 5 and 7°C, and is ideally consumed within three months, up to a maximum of six months if conditions are optimal. After this period, it remains safe to drink, but loses much of its aromatic brilliance. It is the product not to be opened "just to see" if you do not intend to finish it in the following weeks.
The three gestures that change everything
Storing the bottle upright rather than lying down limits contact between the cork and the liquid. Keeping it away from direct light and heat, rather than on a shelf exposed to the sun, significantly slows down the degradation of aromas. And for a well-started bottle that you plan to keep for a while, transferring it to a smaller container reduces the amount of air in contact with the liquid, which slows oxidation.
In summary
An opened spirit does not become dangerous, but it loses aromatic richness over time, at very different rates depending on the product. Armagnac, absinthe, and pastis can be kept for several months, sometimes several years. Floc de Gascogne and vanilla liqueur, being more fragile, should be consumed within the months following opening, particularly Floc in the refrigerator.
Discover the entire range of Maison ARTEZ, from Floc to Armagnac, on our online store.