400g/14oz fresh blueberries
1 lemon, juice only
200g/7oz plain flour, plus extra for dusting
75驳/2陆辞锄 caster sugar
2 tbsp cornflour
2 tbsp demerara sugar
1 vanilla pod, split in half lengthways, seeds scraped out
3 chocolate and peanut bars, chopped
150g/5陆oz unsalted butter, chopped
200ml/7fl oz double cream
6 free-range egg yolks
2 free-range egg yolks
300ml/10陆fl oz full-fat milk