Preheat your oven to 180°C (350°F) and line a baking sheet with parchment paper.
In a mixing bowl, whisk together eggs and granulated sugar until frothy.
Add vanilla extract and salt, mixing well.
Sift in the flour slowly, folding gently to avoid deflating the mixture.
Pour the batter onto the prepared baking sheet, spreading evenly.
Bake for 12-15 minutes, or until golden brown and springs back when touched.
Once baked, remove from the oven and let cool for a few minutes.
Carefully invert the cake onto a clean kitchen towel dusted with powdered sugar.
Roll the cake with the towel while it's still warm, and let it cool completely.
Meanwhile, whip the heavy cream with powdered sugar until soft peaks form.
Unroll the cooled cake, spread the cream and fruit puree, then roll it back up tightly.
Chill for at least 1 hour before slicing and serving.