Napoleon's blockade cut off cocoa — Turin mixed in hazelnuts, creating Nutella's ancestor

In 1806, Napoleon Bonaparte imposed the Continental System — a blockade of British goods that effectively banned trade with the Americas. One of the unintended consequences was a severe shortage of cocoa beans, which arrived in Europe from Spanish and Portuguese colonies in South America. Turin, in the Piedmont region of Italy, was a center of chocolate craftsmanship. The city's chocolatiers had built their trade on imported cocoa — and now the supply had all but stopped.

The chocolatiers of Turin faced a choice: stop making chocolate, or stretch the little cocoa they had. They turned to the region's most abundant local crop: hazelnuts. The Piemonte region produced some of the finest hazelnuts in Europe. By grinding roasted hazelnuts into a paste and mixing them with the remaining cocoa, the chocolatiers created a new product — a smooth, spreadable blend that contained at least 30% hazelnut. They called it gianduja, after a popular Carnival character representing the Piedmont region.

In 1852, the Turin-based chocolate maker Caffarel perfected the recipe and introduced the gianduiotto — a small, ingot-shaped version of gianduja that became a local specialty. The product was a compromise born of necessity, but it was delicious. Gianduja became a staple of Piedmontese confectionery and spread across Italy.

More than a century later, the same constraint-driven innovation inspired another Italian company. In 1946, Pietro Ferrero, a baker in Piedmont, created a sweet bread spread using hazelnuts to stretch scarce cocoa in post-war Italy. He called it 'Pasta Gianduja.' The product was later renamed Nutella. Today, Nutella is sold in over 160 countries. A compromise forced by Napoleon's blockade — a chocolate stretched with hazelnuts — had created a global confectionery category.