Mix the flour with cornstarch and baking powder, sieve into a sealable bowl (3 liters), mix with powdered sugar and vanilla sugar. Add eggs, oil and eggnog. Close the bowl tightly with the lid.
Shake vigorously several times (15-30 seconds in total) so that all ingredients are well mixed. Stir everything carefully with a whisk or mixing spoon so that the dry ingredients from the edge are mixed in.
Pour the dough into a bundt pan (diameter 22 cm, greased, floured). Put the dish on the wire rack in the oven:
Top / bottom heat: around 180 ° C (preheated), hot air: around 160 ° C (not preheated), gas: around level 2-3 (not preheated) Baking time: around 60 minutes
Let the cake stand in the tin for about 10 minutes, turn it out onto a wire rack and let it cool.