Dessert

Combine the whipping cream, egg yolks, cornstarch, and sugar in a heatproof bowl.
Heat the mixture over a double boiler, whisking until it thickens but does not boil.
Let the cream cool for a few minutes.
Stir in the vanilla powder.
Spread the vanilla cream between the cake layers.
Frost and shape the top of the cake with whipped cream into a thick domed shape.
If using jam, replace one layer of vanilla cream with strawberry jam.
Cover the whole cake with the marzipan.
Dust the top with powdered sugar.
Chill the cake until serving.
This recipe is adapted from Wikibooks. It is licensed under Creative Commons Attribution-ShareAlike 4.0 International.