What ingredient was added to Nutella's original recipe during its development in the 1940s to stretch limited chocolate supplies after World War II?

Nutella, the beloved chocolate-hazelnut spread, has become a global phenomenon since its creation. But behind this sweet success lies an interesting story of product development driven by post-war necessity and culinary innovation. Test your knowledge about how this iconic product came to be and transformed from a luxury chocolate alternative to a breakfast staple in homes around the world.

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Hazelnuts
Peanuts
Almonds
Chestnuts