Preheat your oven to 350°F (175°C) and line a jelly roll pan with parchment paper.

In a bowl, whisk together flour, sugar, baking powder, and salt until well combined.

In another bowl, beat eggs until thickened; gradually add vanilla extract.

Fold the dry ingredients into the egg mixture gently until just combined.

Pour the batter into the prepared pan and bake for 12-15 minutes until golden brown.

Immediately turn the cake onto a kitchen towel dusted with powdered sugar; roll tightly while warm.

For the filling, whip cream until soft peaks form; add powdered sugar and continue whipping until stiff peaks form, then fold in mixed berries.

Unroll the cooled cake, spread whipped cream mixture evenly, and re-roll using the towel for support.

Dust with powdered sugar before slicing and serving.