Drain the pineapple and collect the juice. Fill up the juice with milk to 0.5 l and use it to cook the vanilla pudding according to the instructions. Then let it cool down. Add the juice of a lemon and the pineapple to the cooled pudding.
Whip the cream and fold into the pudding. Season to taste with eggnog.
Then cover the finished cream with an eggnog mirror and decorate with chocolate shavings.