Europe heatwave threatens Italy’s 800-year-old Parmesan cheese tradition

Heatwave hits Italy's Parmesan production

Europe's blistering summer heat is now threatening one of Italy's most treasured culinary traditions — Parmesan cheese. Producers in the Emilia-Romagna region, where this hard cheese has been made for 800 years, report that cows are struggling to cope with the extreme temperatures.

Milk yields have dropped sharply. Cows eat less and produce less milk when stressed by heat. This directly impacts the quantity and quality of milk needed for authentic Parmigiano-Reggiano.

Cows and climate stress

Dairy cows are sensitive to heat. When temperatures cross 30 degrees Celsius, they reduce feed intake. Milk production can fall by 10 to 20 percent. In Italy's Po Valley, this summer's prolonged heatwave has made conditions worse.

Farmers are using fans, sprinklers, and shaded areas to cool their herds. But these measures add costs and cannot fully offset the impact of record-breaking temperatures. The region has seen multiple heat alerts in recent weeks.

Traditional methods under pressure

Parmesan production follows strict rules. The milk must come from cows fed only on local forage. No silage is allowed. This limits how farmers can adapt. They cannot simply shift to heat-resistant feed without breaking the rules that define the cheese's identity.

The ageing process, which takes at least 12 months, also faces risks. High ambient temperatures in storage warehouses can affect the cheese's texture and flavour. Producers are investing in climate control, but this raises production costs.

Economic and cultural stakes

Parmigiano-Reggiano is a protected designation of origin product. It supports thousands of small farms and dairies. A drop in output means higher prices for consumers and lower incomes for producers.

The consortium that oversees Parmesan production has not yet released official figures for this season. But early estimates suggest a 5 to 8 percent decline in milk collection compared to last year. If the heat persists, the losses could deepen.

Italy is not alone. Across Europe, dairy farmers are grappling with similar challenges. From France to Germany, heatwaves are disrupting milk supply chains. But few products carry the heritage and economic weight of Parmesan.

Adapting to a warmer future

Some producers are experimenting with breeding heat-tolerant cows. Others are adjusting feeding schedules to cooler hours of the day. The consortium is also studying whether minor tweaks to ageing protocols could help without violating tradition.

But these are stopgap measures. The real question is whether an 800-year-old artisanal process can survive a rapidly changing climate. Officials say they are committed to preserving the tradition, but acknowledge that adaptation will be necessary.

For now, Parmesan lovers may see smaller supplies and higher prices. The cheese's future depends on how quickly producers can adapt without losing what makes it unique.

What happens next will depend on the weather in the coming weeks. If the heatwave eases, production could stabilise. But longer-term, climate models suggest hotter summers are here to stay. The Parmesan tradition will need to evolve — or risk fading.