Stir the cocoa powder and coffee into the boiling water. Allow to cool to room temperature.

In the bowl of an electric mixer, using the whisk attachment, beat together all ingredients until it resembles whipped cream.

Divide the mixture between moulds of your choice. Freeze until a lolly stick will stay upright in the moulds. Freeze for another few hours. Dip the moulds into lukewarm water to unmould. Serve with an assortment of candies that the kids can use to decorate their lollies.