couple drops lemon juice
50g/2oz caster sugar
1 heaped tbsp unsweetened cocoa powder
20g/1oz cornflour
50g/2oz icing sugar
pinch of salt
150驳/5陆辞锄 dark chocolate, finely chopped
2 tbsp soft butter
3 free-range egg, yolks only
3 free-range eggs, whites only
250ml/9fl oz whole milk
200ml/7fl oz whipping cream