1 lemon, zest only (optional)
black food colouring
180g/6oz caster sugar
200g/7oz yellow fondant icing
100g/3Β½oz white fondant icing
60²µ/2ΒΌ΄Η³ϊ icing sugar, sifted
180g/6oz self-raising flour
180g/6oz softened butter or baking spread
30g/1oz butter, softened
3 medium free-range eggs, lightly beaten
1 tbsp milk