1 orange, grated zest only
3 tbsp orange curd
1 level tsp baking powder
100²µ/3½´Ç³ú caster sugar
100²µ/3½´Ç³ú sifted icing sugar
icing sugar, to dust
100²µ/3½´Ç³ú self-raising flour
50g/1¾oz soft butter
2 large free-range eggs
100²µ/3½´Ç³ú baking spread