150驳/5陆辞锄 blueberries
50g/2oz blueberries
1 unwaxed lemon, zest and juice
1-2 tbsp lemon juice
陆 tsp baking powder
225g/8oz caster sugar
300驳/10陆辞锄 icing sugar, sieved, plus extra for dusting
300驳/10陆辞锄 self-raising flour
125驳/4陆辞锄 butter, softened
50g/2oz butter, softened
200g/7oz cream cheese
2 free-range eggs
250g/9oz soured cream