Preheat the oven
to 180'C/350'F /Gas 4. Line and grease three
20cm/8in cake tins with greaseproof paper.
Place 6 of the
eggs in a bowl set over hot water and beat until
frothy. Beat in 165g sugar until the mixture doubles
in volume. Remove from the heat. Fold in the orange
rind, half the lemon rind, 15ml/l tbsp of the lemon
juice and the coconut. Sift over the flour mixture
and fold in well.
Divide the
mixture between the cake tins. Bake until the cakes
pull away from the sides of the tins, 25-30 minutes.
Leave in the tins for 5 minutes, then cool on a wire
rack.
Blend the corn
flour with cold water to dissolve. Whisk in the
remaining eggs until blended. In a pan, mix the
remaining lemon rind and juice, water, remaining
sugar and butter. Bring to the boil. Whisk in the
corn flour, and return to the boil. Whisk until
thick. Remove and cover with dear film.
Cream the butter and icing
sugar. Stir in the lemon rind and enough lemon
juice to obtain a spread-able consistency.
Sandwich the cake layers with the lemon custard.
Spread the frosting over the top and sides.
Cover with the coconut.