Pour the peaches onto a sieve, collect the juice. Cut the peaches into small pieces. Pour the eggnog over the peaches. Fill the juice up to 1/2 liter with water. Mix the vanilla pudding powder with the sugar and some juice. Bring the remaining juice to the boil, stir in the mixed pudding powder, allow to cool. Stir frequently as it cools down so that no skin forms. Then pour over the egg liqueur mass and fold in. Beat the cream with the cream stiffener and fold in carefully. Pour into glasses or a bowl and refrigerate.