Darina Allen's Christmas Chocolate Yule Log

Chocolate Yule Log is usually made with a chocolate sponge Swiss roll, but I prefer this sinfully rich version. There’s no need for any icing, it’s rich enough as it is! Serves 10 approx. 5 eggs, preferably free-range 175g (6oz) best-quality dark chocolate (we use Callebaut 52%) 175g (6oz 3/4 cup) caster sugar 3 tablespoons (4 American tablespoons) water Filling 300ml (10fl oz/1 1/4 cups) double cream 1-2 tablespoons (1 1/4 – 2 1/2 American tablespoons) rum sieved icing sugar Decoration Santas, holly leaves, etc Preheat the oven to 180oC/350oF/Gas Mark 4. Line a shallow 30.5cm x 20.5cm (12 inch x 8 inch) Swiss roll tin with oiled tin foil or parchment paper. Separate the eggs. Put the yolks into a bowl, gradually add the caster sugar and whisk until the mixture is thick and pale lemon coloured. Melt the chocolate with the water in a saucepan set over a very gentle heat, then set aside while you whisk the egg whites to a firm snow. Add the melted chocolate to the egg yolk mixture. Stir a little of the egg white into the mixture, then cut and fold the remainder of the egg whites into the mixture and turn it into the prepared tin. Cook in a preheated oven for 15-18 minutes, until firm to the touch around the edge but still slightly soft in the centre. Wring out a tea-towel in cold water. Take out the roulade out of the oven and let it cool slightly, then cover with the cloth. (This is to prevent any sugary crust from forming.) Leave it in a cool place. Provided the cloth is kept damp, it will keep for 2 days like this. To Serve Whip the cream and flavour with the rum. Put a sheet of greaseproof paper onto a table and dust it well with sieved icing sugar. Remove the damp cloth from the roulade and turn the tin upside down onto the prepared paper. Remove the tin and carefully peel the tin foil or parchment paper off the roulade. Spread with the rum- flavoured cream and roll it up like a Swiss roll. Cut about one-third off the roll at an angle. Lift the roll onto a serving plate, arrange the smaller piece so it looks like a branch and dust well with icing sugar. Decorate with Christmas cake decorations, such as holly leaves, Santas or robins, sprinkle again with a little extra icing sugar and serve.