The 150-million-year-old soil that defines its minerality
Chablis sits at the northern tip of Burgundy, in the Yonne department — geographically closer to Champagne than to the rest of Burgundy. Its soil is Kimmeridgian: limestone formed 150 million years ago, packed with marine fossils, mostly small oysters (Exogyra virgula). That fossil-bearing limestone is, literally, what gives Chablis its signature minerality — not a tasting-note metaphor, actual geology.
The climate is cold and continental, with oceanic influence. It's far enough north that spring frost (March to early May) is a real annual threat — so much so that vineyards use aspersion irrigation not to hydrate the vine (banned by the AOC anyway), but as active frost defense, forming a protective layer of ice over the buds. Harvest doesn't arrive until September, and only once the must reaches the minimum potential alcohol required by the AOC (9.5% to 11%, depending on the category).
Training is Guyot, the typical Burgundy system, and the only permitted grape is Chardonnay.
Wineries that define Chablis today
François Raveneau
Alongside Dauvissat, one of the two most revered producers in Chablis — extremely age-worthy, nearly artisanal wines, notoriously hard to find.
Vincent Dauvissat
The other absolute reference point in the region. His Grand Crus (especially Les Clos) are constantly cited as the standard for what Chablis can be.
William Fèvre
The largest owner of Grand Cru vineyards in Chablis, with a more accessible style without losing typicity — a good entry point into the region's Grand Crus.
La Chablisienne
A cooperative founded in 1923, now responsible for more than 25% of all Chablis production — the scale that sustains the region when boutique producers sell out.
Chablis's 7 Grand Crus: Blanchot, Bougros, Les Clos, Grenouilles, Preuses, Valmur and Vaudésir — all on the same south/southeast-facing slope above the Serein river. Les Clos and Vaudésir have historically held the highest reputation of the seven.
How this plays out in LagarLab
Chablis is one of only two estates available for free in the simulator — alongside Agrelo — so you don't need to pay anything to see how Kimmeridgian soil and a cold climate translate into a must with acidity and minerality far above the rest of the catalog: it's by far the most acidic, most mineral white profile in all of LagarLab.
What if you made wine from this terroir yourself?
Chablis is free in LagarLab — pick this estate and make the same decisions a real winemaker would on that Kimmeridgian soil.
Vinify Chablis for freeNo sign-up: you go straight into the lab with this farm.
Frequently Asked Questions
What makes Chablis's soil special?
It's 150-million-year-old Kimmeridgian limestone, containing marine fossils (mostly small oysters) — that composition is the direct source of the wine's signature minerality.
Is the vine irrigated in Chablis?
Not for hydration — that's banned by the AOC. The aspersion irrigation that is used is exclusively for spring frost defense, forming a protective layer of ice over the buds.
What are the Grand Crus of Chablis?
Seven: Blanchot, Bougros, Les Clos, Grenouilles, Preuses, Valmur and Vaudésir. Les Clos and Vaudésir hold the highest reputation among the seven.
Is Chablis available on LagarLab's free plan?
Yes. It's one of only two estates on the free plan, alongside Agrelo — you can start simulating without paying anything.