Mix eggs, sugar, vanilla sugar and water until frothy. Fold in the flour, starch and baking powder. Spread the dough on a baking sheet lined with baking paper and cook at 190 ° C for 10-15 minutes. to bake.
(The sponge dough must always be soft when rolling so that it does not break, so put a damp tea towel over it a few hours before rolling)
For the filling:
Cook a pudding from the milk, vanilla pudding powder, sugar, let the pudding cool.
During this time, mix butter, nougat and powdered sugar to a smooth mass, then carefully stir in the cooled pudding. Spread the cream on the biscuit and roll up.