Add the mixture to the milk and stir until a thick pudding forms.
Remove the pot from heat, cover the surface of the pudding with plastic wrap, and let it cool to room temperature.
Beat the softened butter on high speed until it becomes light and fluffy - I usually beat the butter for about 10 minutes.
200 g butter
Add the cooled pudding to the butter, one tablespoon at a time, and mix until combined.
Finally, add the advocaat and mix briefly.
60 ml advocaat
cake finish
Place the bottom layer of the sponge cake in the pan and, if you like, moisten it a bit (I moistened it with water lightly sweetened with sugar and a few drops of almond extract).
Spread the poppy seed mixture over the sponge cake.
Spread about 2/3 of the pudding cream over the poppy seeds.
Place the second layer of sponge cake, moisten it, and spread with the reserved cream.
Finally, sprinkle the cake with almond flakes.
approx. 50 g almond flakes
The cake can essentially be served immediately. It can be left out if it's not too hot.
Uwagi
If you are using whole poppy seeds, pour hot water over them and cook for about 30 minutes. Drain, cool, and then grind twice with a meat grinder. You don't need to pour hot milk over them anymore.