Unroll the Swiss
roll, spread with butter icing, then roll up again.
Slice the Swiss roll along the centre lengthways,
almost to the base and ease the two halves apart.
Mix all the
filling ingredients in a food processor or
blender until smooth. Shape the mixture with
your hands to a 23cm/9in sausage shape.
Tint all the
sugar-paste icing brown. Set aside 50g/2oz and use
the rest to cover the cake.
Paint the top of
the "bun" with diluted brown food Coloring to give a
toasted effect. Position the "sausage"..
Divide the glace
icing in half. Tint one half brown and the other
red. Pipe red icing along the sausage, then overlay
with brown icing. Sprinkle the sesame seeds over the
"bun"..
Cut the reserved
brown sugar-paste icing into thin strips. Place on
the cake with the joins under the "sausage". Place
the cake on a napkin on a serving plate, with a
knife and fork.