- Break up the chocolate into a heat proof bowl. 
- Pour in the double cream. 
- Put the bowl over a pan of barely simmering water and leave, until the chocolate has melted. 
- Take the bowl off the heat and with an electric hand mixer, whisk the mixture, until you have a cold creamy mixture. 
- Pour the brandy into a shallow dish. 
- Dip the biscuits, one at a time, first into the liquor, then into the chocolate cream and arrange a layer of biscuits in the base of the pudding basin. 
- Spread a layer of the chocolate mixture over the first layer of biscuits. 
- Repeat the whole process, until you have 4 layers. 
- Place a saucer (one that fits inside the rim of the pudding basin) on top of the mixture, put some weight on top and leave in the fridge over night. 
- Before serving, dip the basin in hot water for a few seconds and turn the pudding out on to a flat serving plate. 
- Put the cake back into the fridge for 15 mins to allow the outside to get firm again. 
- Finally, dust with cocoa powder.