The most believable one set the birth of Tiramisu at the end of XVII Century in Siena, where the Grand Duke of Tuscany, Cosimo III de’ Medici, decided to settle down for a while in town. The confectioners thought to made a sweet in honour of the Grand Duke. It should been a sweet important but simple and tasty at the same time. And then Tiramisu was made, at the time so called “Duke’s Soup”. Cosimo really appreciated the confectioners’ skill and the delicious sweet taste and brought the receipt to Florence. “The Duke’s Soup” became popular over the Tuscany’s borders, heading to Treviso and then Venice.
The legend tells that it became the courtiers’ favorite sweet for its exciting and aphrodisiac power.The habit to eat a lot of that sweet before any sexual date spread very soon. And so the “Duke’s Soup” changed the name in the more allusive Tiramisu (= “pick me up”).