Preheat the oven
to 180'C/350'F/Gas 4. Line a 23 X 5cm/ 9 x 2in round
tin with greaseproof paper and grease the paper.
Melt the butter and chocolate in the top of a double
boiler. Leave to cool.
Sift the cocoa
into a bowl. Add the sugar and eggs and stir until
just combined. Pour in the chocolate mixture and
brandy. Fold in three-quarters of the nuts, then
pour the mixture into the cake tin.
Set the tin in a
roasting tin and pour 2.5cm hot water into the outer
tin. Bake until the cake is firm to the touch, about
45 minutes. Leave for 15 minutes, then unmould on to
a wire rack. When cool. wrap in greaseproof paper
and chill for at least 6 hours.
For the glaze,
melt the butter and chocolate with the milk and
vanilla in the top of a double boiler.
Place the cake on
a wire rack over a plate. Drizzle the glaze over,
letting it drip down the sides. Cover the cake sides
with the remaining nuts. Transfer to a serving plate
when set.