1 ½ cup sugar
3 / 4 dl potato flour
2 tablespoons cocoa
1 teaspoon baking powder
2 dl icing sugar
2 teaspoons vanilla sugar
1 egg yolk
To do this:
Set the oven to 480°F (250°C). Whisk the eggs and sugar until fluffy.
Mix the flour, cocoa and baking powder screened.
Turn down the mixture into batter.
Stir out the batter on a baking paper in a roasting pan, 30×40cm.
Bake in middle of oven about 5 minutes.
Overturn the cake on sweetened paper.
Pull off the paper as the cake baked on.
Let it cool.
Stir butter and icing sugar to the porous backfill.
Add the vanilla sugar.
Stir in egg yolk.
Spread the filling on the cake and unroll it.
Let’s dream cake to be cold for a while before it is cut.