To make the sauce, puree the ingredients
until smooth, then pour into a small pan and cook over a medium heat,
stirring, until the sauce thickens and just comes to the boil. Strain
and discard the seeds, if you prefer. Cover and chill. To make the
filling, beat together all the ingredients until well mixed.
Cut the cake horizontally into three layers and sandwich them together
with two-thirds of the filling, spreading the remainder on the top.
Cover and chill until ready to serve with the sauce poured over the