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A 2,200-year-old mystery hidden in a pie

In Rome, even something as proverbially simple as a "piece of cake" – or pie – has hidden layers of history, resilience and even mischief tucked away between the crust and the cream. The iconic Crostata di ricotta e visciole (ricotta and sour cherry tart) is the perfect example: with a creamy layer of sweet whey cheese, generous coating of jam and thick shortcrust covering up concealing a secret.

Read the full story on BBC Travel.

Video by Anna Bressanin, Matteo Vieille and Elisabetta Abrami