for the cake:
6 eggs seperated
5oz caster sugar
2oz coco powder
first place the egg yolks ina basin and whisk until the thicken and add the sugar and whisk again until thicker - but not too thick. Now put the coco powder in.
Now whisk up egg whites to soft peaks stage and fold them into the egg yolk mixture.
Now an oblong tin 29cmx18 or 12"x 7"
lined and grased underneith the lining and around the sides.
put the mixture into the tin and pop in the oven for 25 mins on gas4 when the cake come out of the oven and cools it will shrinke as there is no flour in it.
put a peice of grease proof paper on the kitchen counter and spread icing cugar heavily (really heavey otherwise the cake will stick to the paper) on the paper - then turn the cake out of the tin and peel the lining from the bottom of the cake.
Now the filling - either buy sweetned chestnut purree. Or make the filling
2eggs
2 tablesppon of water
8oz plain choclate
8floz double cream
melt the chocolate and added water either on a bain marie or in the microwave.
Seperate the eggs and beat the egg yolks and then put them into the chocolate mixture and beat again. Then beat the egg whites till stiff and then fold them into the chocolate mix and mix until one consitencey.
Now spread the mixture over the choclate cake base and whip up the cream and spread on top.
then very carefully roll up the paper and the log will crake and the icing suggar will be dusted over the roll.
serve in small portions as very rich.