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Bleu de Gex is a French cow's-milk blue cheese, made in the Jura mountains. It is labelled Protected Designation of Origin (PDO). Its precise labelled name is “Bleu de Gex haut Jura”; it is also called “Bleu de Septmonce

Bleu de Gex

A mild French blue cheese from the Jura mountains made with raw cow's milk.

Photo: Myrabella, CC BY-SA 3.0, via Wikimedia Commons

Bleu de Gex is a semi-soft blue cheese from eastern France. It uses only Montbéliard cow's milk and has a creamy texture with distinct blue veins. The flavor is gentle compared to other French blues.

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  • Made only from Montbéliard cow's milk
  • Curds are loosely packed for mold growth
  • Milder than most French blue cheeses
  • Cannot be sold legally in the United States
  • Stamps each wheel with the word "Gex"

What is Bleu de Gex?

This cheese comes from the Jura area in France. It is a blue variety that stays soft and creamy inside. The paste is pale yellow with visible blue-green mold lines. Each wheel is flat on both sides with rounded edges. The diameter ranges from 31 to 35 centimeters, and the thickness is about 10 centimeters. A typical wheel weighs between 6 and 9 kilograms. The surface is natural and unwashed. The name refers to the historical Pays de Gex region. Every piece bears a stamp reading "Gex" to prove its origin.

Where does Bleu de Gex come from?

The name honors the Pays de Gex, an area spanning modern France and Switzerland. Legal boundaries for production were set by the Tribunal of Nantua in July 1935. This zone runs from Le Grand-Abergement in Ain to Saint-Laurent-en-Grandvaux in Jura. A decree in September 1977 confirmed these limits. The cheese received Protected Designation of Origin status in June 1996. Producers organize through groups in Poligny and Gex to maintain standards and promote sales locally.

What does Bleu de Gex taste like?

Taste is notably gentle for a blue cheese. The texture is dense yet yields easily to the tooth. Creaminess dominates the mouthfeel. The blue mold provides a subtle tang rather than a sharp bite. Longer aging creates a variety called pérassu, which develops stronger notes. The fat content sits at 29 percent in the final product. This richness supports the smooth, mellow profile that distinguishes it from harsher counterparts.

How Bleu de Gex is made

Makers use raw milk exclusively from Montbéliard cows. The curds are not washed before packing. Workers place them loosely into molds to allow air circulation. This loose structure encourages Penicillium roqueforti growth. The cheese is uncooked and unpressed during formation. Aging lasts a minimum of three weeks. Artisanal makers and cooperative dairies handle production across several towns in the Jura department.

Bleu de Gex, drawn

The cheese pale yellow with a blue rind, drawn as a blue-veined wedge on a board. Drawn from this page, not a photograph of one wheel.
Age: Young up to 2 months, on a 0 to 5 scale from fresh to extra-aged. at least three weeks, often two months.
Veins: blue-green mould grown inside the paste, through holes pierced in the cheese. Roquefort, Stilton and Gorgonzola.
Milk Cow's milk. animal rennet.

How Bleu de Gex is eaten and cooked

Eaters enjoy it on cheese boards as a standalone item. It works well as a snack with bread or fruit. The mild character suits pairing with aged wines like port. Some cooks grate older wheels over dishes. The softer version melts gently but holds its shape better than runny blues. It serves as a quiet companion to simple meals rather than a dominant ingredient.

Bleu de Gex through the day

This cheese fits daily eating habits in its home region. People serve it at lunch or dinner as part of a course. It appears on boards alongside other local products. Snacking on slices with wine is common practice. The ideal window for consumption runs from May to July. Another good period extends from April to November after two months of aging.

Bleu de Gex in the world's kitchens

French cuisine claims this cheese as a regional specialty. The Jura department produces the vast majority of output. Local farmers and cooperatives supply most wheels. The style reflects mountain dairy traditions. Milder profiles suit palates that prefer subtlety over intensity. It remains a staple in eastern French households and restaurants.

At a glance: where it turns up

By meal and use

Cuisines

Celebrations

Faith and ritual

No religious rituals or dietary laws specifically govern this cheese. It does not hold special status in monastic settings. No fasting rules or feast day obligations attach to its consumption. Vegetarian or kosher certifications are not highlighted in its history. It remains a secular food product tied to geography rather than faith.

Bleu de Gex at celebrations

Weddings or festivals do not feature this cheese prominently. It lacks ties to specific holiday tables or new year customs. The alpine pasture season influences milk availability but not ceremonial use. Hospitality customs may include serving it to guests casually. It belongs to everyday life rather than marked celebrations.

Custom and folk tradition

Local lore connects the cheese to the Pays de Gex heritage. Herding Montbéliard cows remains a traditional livelihood. Cooperative dairies preserve old methods of loose curd packing. The Pérassu variation represents a traditional choice for longer aging. These practices sustain rural economies in the Jura mountains.

Buying, keeping and serving Bleu de Gex

Keep the cheese wrapped in wax paper or foil in the refrigerator. Consume it within a few weeks of purchase for best texture. Allow it to reach room temperature before serving to enhance flavor. Do not freeze it, as this damages the creamy structure. Older wheels should be eaten sooner to avoid excessive dryness.

Protection and trade

Production faces legal hurdles in international markets. U.S. regulations require pasteurized milk for soft cheeses, blocking exports. Domestic sales remain strong within France. Annual output hovers around 558 tonnes. Forty-eight farmers and two cooperatives drive production. Artisanal makers add smaller batches to the total volume.

Questions people ask about Bleu de Gex

What kind of milk is used to make Bleu de Gex?

It uses only raw milk from Montbéliard cows. This specific breed gives the cheese its characteristic creaminess and mild flavor profile.

Where does Bleu de Gex come from?

It originates in the Jura region of eastern France. The production area spans from Le Grand-Abergement to Saint-Laurent-en-Grandvaux.

How does the taste compare to other blue cheeses?

It is significantly milder and less salty than typical French blues. The texture is creamy rather than crumbly, offering a gentle tang.

Why can't I buy Bleu de Gex in the United States?

U.S. law requires soft cheeses from France to be made with pasteurized milk. Bleu de Gex uses raw milk, making it illegal to import.

What is Pérassu?

Pérassu is the term for Bleu de Gex that has been aged longer. It develops a firmer texture and more pronounced flavor than the standard version.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Bleu de Gex", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryCheese rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes. Recipes, ageing and customs differ from one dairy, valley or kitchen to the next. Folk beliefs are described as tradition, never as advice. If something is wrong, tell us. Last refreshed 2026-10-15.

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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