Pour equal amounts of coffee and eggnog liqueur into a small jug. Put some cake pieces in the bottom of the De'Longhi cappuccino glasses, then pour a little of the coffee/eggnog mixture over the cake.

Next, whip the cream with the teaspoon of sugar, then fold in a little coffee and eggnog just to flavor it. Remove about a third of the cream and add the cocoa until well mixed; set aside.

Pipe or spoon a layer of the first cream onto the cake.

Put more cake crumbs on top of the cream and drizzle with more coffee/eggnog mixture. Add some chocolate sprinkles if desired, then pipe or spoon another layer of the cream.

Repeat with the cake and coffee/eggnog liqueur one last time, and then finish with the mocha cream. I piped stars for a nice finish, then topped them with a chocolate covered coffee bean.

Chill for at least 4 hours or overnight for best results.