A century of diplomatic menus reveals how food shapes nations

A state dinner isn't just about feeding guests. Every dish on the plate carries a message — about who you are, what you value, and which countries you want to align with. Researchers in Portugal spent months analyzing 457 diplomatic menus spanning 1910 to 2023, and what they found was striking: food is foreign policy, served on porcelain.

"Those meals play a significant role as diplomatic institutions in the execution and continuity of Portuguese foreign policy," says Óscar Cabral, a gastronomic sciences researcher at the Basque Culinary Center. "They demonstrate how culinary and gastronomic practices have facilitated diplomatic negotiations and provided opportunities for cultural exchange, political messaging, and the conveyance of Portuguese culture."

The menus tell a story of national identity shifting across a century. In the early 1900s, Portuguese diplomats served lavish French-style meals — the global language of refinement at the time. But by mid-century, something changed. Portuguese products began appearing alongside the French classics. Azores trout. Regional cheeses. Local wines. It wasn't accidental. It was a deliberate pivot toward what researchers call "gastronationalism" — using food to assert who Portugal was to the world.

The 1957 menu for Queen Elizabeth II's visit is a perfect example. Rather than serve what European royalty expected, Portugal offered a "regional lunch" featuring dishes from different Portuguese cities. The message was clear: we have our own culinary identity, and we're proud of it.

Food as Political Language

The researchers identified five distinct ways diplomatic meals do political work. Some are tactical — settling territorial disputes or negotiating land transfers. Others are geopolitical — renewing alliances with neighboring countries. Economic meals court trade partners. Cultural meals celebrate shared heritage, especially between Portugal and its former colonies.

There's an elegance to how this works. When Portugal wants to strengthen ties with other Portuguese-speaking nations, menus feature Cozido à Portuguesa or traditional codfish recipes — dishes that create instant recognition and belonging. A shared culinary language becomes a shared diplomatic one.

But the archives also reveal the awkward moments. A roast beef served to India's president raises eyebrows in hindsight. A French-style consommé made with Portuguese ham — what Cabral calls a "gastronomic funny challenge" — sits uneasily between two culinary traditions, trying to claim both.

These tensions matter because they show what Portugal was grappling with: how to be itself while speaking the international language of diplomacy. After Portugal's colonies gained independence in the mid-1970s, menus shifted again. References to colonial origins disappeared. The understanding of Portuguese cuisine had to be rewritten.

What's striking about this research is how much it reveals about any nation's relationship with itself. Every menu choice — what gets served, what gets celebrated, what gets hidden — is a small act of nation-building. Food doesn't just reflect politics. It makes politics possible.