1 To melt chocolate.

2 Whisk the Swiss rolls and the sugar.

3 Add vanilla, eggs and whisk.

4 Add flour and baking powder, mix.

5 Finally, stir in the melted chocolate.

6 Pour into a round mold 20 cm in diameter, and cook for 15 to 20 min at 180°C. The blade of the knife stuck in the cake comes out dry.