Start a day before you want to serve the log.

Whip the cream with the vanilla until soft peaks form.

Dip a biscuit quickly in the sherry and shake off the excess.

Spread one side of it with whipped cream then dip another biscuit and join them together.

Lay them on your serving tray standing up and continue until you've filled the tray.

To make a branch, add biscuits perpendicular to the log and add them on a slight angle.

Add cocoa and icing sugar to the remaining cream and fold/whip it in.

Coat the log in the chocolate whipped cream.

Run a fork through the icing to rough it up and make it look like bark and then sprinkle with grated chocolate.

Refrigerate for at least 24 hours before serving.