mix together the icing sugar and the cocoa powder
melt the vegetable fat on low heat.
prepare loaf pan, put in some baking paper and perhaps fix it with some pegs.
once the vegetable fat is completely melted, mix in the dry ingredients.
put some biscuits on the ground of the loaf pan, then spoon over some of the chocolate mixture. after this you have to put in a new layer of biscuits, then mixture, then biscuits.
finish with a layer of chocolate mixture and put the cake in the fridge.