For the cognac connoisseur, there are spirits, and then there are myths bottled in crystal. LOUIS XIII Rare Cask 42.1 exists in that rarefied stratosphere of ultra‑precious spirits that aren’t just consumed but coveted, a liquid embodiment of patience, provenance, and pure rarity. It’s hunted, treasured, and celebrated like the ultimate Hermès Birkin drop. There’s no calendar for its arrival, no guarantee it will ever appear again, and certainly no casual release. When it shows up, the world of collectors holds its breath.
A One-of-a-Kind Discovery
Rare Cask 42.1 was uncovered deep in the Domaine du Grollet cellars by Cellar Master Baptiste Loiseau, the only person entrusted with this delicate legacy. A single tierçon (a large centenarian Limousin oak cask) had quietly been maturing eaux-de-vie of remarkable intensity. Its aroma was unlike anything seen before: a rich, complex, and unpredictable expression of LOUIS XIII. Blending it would have dulled its magic, so it became a standalone marvel.
The cognac pours a deep mahogany and opens with a nose of dried fruits, honey, and spice. On the palate, fig, plum, dark chocolate, and baking spices unfold, finishing long and warm with hints of tobacco and saffron. At 42.1% ABV, it’s a little bolder than the usual LOUIS XIII, and that number, like the cognac itself, becomes part of the story.

Rare by Design, Not Schedule
LOUIS XIII’s Rare Cask releases are not on any predictable schedule. There have been only three to date. The first, Rare Cask 43.8, appeared in 2009 after Cellar Master Pierrette Trichet uncovered a tierçon with extraordinary character. Four years later, Rare Cask 42.6 emerged. And now, after a decade, Rare Cask 42.1 arrives — Loiseau’s singular discovery in a lifetime of custodianship.
There’s no guarantee another will follow. Perhaps in five years, perhaps in fifteen, or maybe never again. Every release is at the discretion of the Cellar Master, who alone decides if nature and time have conspired to create something worthy of the Rare Cask name. That unpredictability is part of the allure.

The Collector’s Trophy
Fewer than 800 decanters of Rare Cask 42.1 exist, each hand-blown in black Baccarat crystal. These aren’t bottles you pick up at a local store. They are heirlooms in waiting, priced at around $52,000, and offered to collectors through LOUIS XIII’s Private Client Directors. Some fortunate few may even sip it “by the glass” at select bars and hotels around the world.
Owning a Rare Cask isn’t just about possession; it’s about being part of a centuries-old tradition, joining a club of people who understand that scarcity, patience, and craft are what make something truly valuable. It’s a bottle that asks you to pause, savor, and appreciate the decades of care it took to reach this point, and maybe even chuckle a little at the absurdly rare privilege of holding it in your hands.

A Sip of Time, Bottled
LOUIS XIII Rare Cask 42.1 is, in essence, a liquid conversation across generations, the work of the House’s Cellar Masters, the patience of French oak, and the unpredictable poetry of time itself. For collectors, it’s not just cognac. It’s the thrill of the chase, the satisfaction of discovery, and the luxury of knowing some things are so rare, they cannot be rushed, scheduled, or replicated.
- Hotel Faena, NYC and Miami
- Baccarat Hotel, NYC
- Novikov, Beverly Hills
- Delilah Wynn Resorts, Las Vegas
- Permission Whiskey, Houston
Photos courtesy of LOUIS XIII



