“People know about our peas all over the world!” Marc Bertrán exclaimed as he stood, arms crossed, behind a folding table laden with jars of cooked green peas, stacks of pamphlets and a big crock of silky pea hummus with a bowl of crackers, inviting passersby to enjoy a taste of three generations’ worth of dedication. “In the 1950s,” Bertran told us proudly, “our town’s famous dish, Pèsols ofegats a l’estil de Llavaneres” – Peas stewed in the style of Llavaneres – “was featured on the menu at Maxim’s restaurant in Paris.”

In the southwestern part of Catalonia, in the province of Lleida, lies Les Garrigues, where the gray-green foliage of compact Arbequina olive trees stretches across some 20,000 hectares of the soft, dry landscape. This is where one of Spain’s best extra-virgin olive oils is produced. The olive tree has been cultivated in Catalonia since at least ancient Roman times, although it was probably first introduced by the Greeks in 600 BCE. Its cultivation developed alongside other typical crops that flourish in a dry climate – such as almonds, grains and grapes – until growing olives and producing olive oil became the main industry of Les Garrigues in the 19th century.

I used to joke that the only thing binding together Spain is the classic tortilla española, which in Catalonia we refer to as the tortilla de patatas – a neutral name. This potato omelet is one of the very few traditional dishes that is prepared the same way (and equally beloved) throughout Spain’s Autonomous Communities, the regions created after the Spanish Constitution of 1978, a necessary step towards creating a democratic country after the end of Franco’s dictatorship. The fact that this is one of the few dishes we all have in common highlights the significant regional differences of our traditional cuisine, despite our common Mediterranean culinary culture.