Mix the butter, sugar and vanilla sugar together well, gradually adding the eggs. Then stir in the other ingredients - except for the flour and baking powder - add this at the end and stir well again. Orange peel, lemon peel and raisins can be added, but do not have to.
Grease a wreath form and pour in the batter. Bake in a preheated oven at 175 ° C (top / bottom heat) for approx. 50 - 60 minutes. With top / bottom heat the cake gets a nice crust, but circulating air is also possible, then preheating is not necessary, if necessary reduce the temperature a little.
Definitely do the chopstick test. Let the cake cool down (approx. 20 minutes), take it out of the mold and dust with icing sugar after it has cooled down.