France’s Beloved Cheeses Face a Climate Crisis

It’s a scene that feels almost cinematic: cattle that usually nap in fragrant alpine meadows are now panting under an unrelenting sun, while the fields that once wore a deep, emerald carpet are now a patchwork of yellow, cracked soil. The same heat that made July the hottest month on record in France is also choking the very heart of the country’s cheese‑making heritage.

Laurent Lours, a dairy farmer and cheesemaker with more than three decades of experience, recalls a time when the grass shortage was a distant worry, something that popped up once every 15‑20 years. “Now it’s every other year,” he says, a hint of exasperation in his voice. “We’ve already endured five heatwaves this season, and the cows are not coping.”

The consequences are stark. Less green pasture means less milk, and the milk that is produced tends to be lower in the buttery richness that gives French “terroir” cheeses their signature depth. For some producers, the answer has been to halt production altogether.

Take Salers, for instance. This semi‑hard, raw‑milk cheese, whose AOP (Appellation d’Origine Protégée) badge guarantees that every step—from milking to aging—happens on the volcanic slopes of Cantal, relies on cows grazing at altitudes of 800‑1,500 m. The cheese’s complex notes—walnut, hazelnut, a whisper of smoked onion—are a direct reflection of the wild grasses that thrive on that volcanic soil.

When the drought hit, more than three‑quarters of the 80 Salers producers were forced to stop. The AOP rules are unforgiving: cows must be fed at least 75 % grass during the April‑November window, and any supplemental feed can’t exceed 25 % of the dry‑matter intake, and must come from the same region. With pastures shriveled, meeting those standards became impossible.

Some cheesemakers, including Lours, pivoted to making Cantal instead—a cheese with looser regulations that allows a higher proportion of hay, wheat, barley or maize, and can be produced year‑round. The trade‑off, however, is a shift in flavor that loyal consumers can taste.

The French government’s cheese watchdog, the Institut national de l’origine et de la qualité (INAO), has responded by granting temporary waivers for a handful of AOP cheeses. Beaufort, Comté and Abondance, for example, are now allowed to increase the share of fodder or to source feed from outside their traditional zones. Yet for Salers, the INAO held firm: less than 50 % pasture‑grown grass, and the cheese would lose its AOP identity.

Producers have been lobbying for more permanent rule changes for years, arguing that climate‑induced stress on pastures makes the historic standards untenable. Their proposals include lengthening the grazing period, raising the allowable hay quota, and opening the door to feed from neighboring regions. The bureaucratic process is glacial, however, and any amendment could take several years to materialise.

Scientists warn that loosening those standards could fundamentally alter the cheese itself. A 2023 study by France’s National Institute for Agriculture, Food and Environment (INRAE) fed cows varying diets—some predominantly grass, others heavily supplemented with hay and corn—to mimic drought conditions. The resulting milk was used to make Cantal, which was then evaluated in labs and by a consumer panel.

The results were crystal‑clear: cheeses produced from grass‑rich milk packed more omega‑3 fatty acids, tasted richer, and boasted a more aromatic profile. “Grass‑fed cows give softer, yellower, more fragrant cheese,” the researchers wrote. “When the diet shifts away from grass, the cheese turns whiter, firmer and loses much of its character.”

For now, the battle is being fought on two fronts: the fields, where farmers scramble to secure whatever feed they can, and the corridors of power, where regulators weigh tradition against a rapidly changing climate. The stakes are high—not just for the farmers’ livelihoods, but for anyone who cherishes the subtle, place‑specific flavors that make French cheese a global treasure.