1 blood orange, zest and juice
50驳/1戮辞锄 fresh root ginger, peeled and grated
300g/10陆oz Yorkshire rhubarb, cut into 5cm/2in pieces
20驳/戮辞锄 custard powder
50驳/1戮辞锄 plain flour
4g agar-agar
roasted almonds, grated, to decorate
50驳/1戮辞锄 caster sugar
180驳/6录辞锄 caster sugar
80g/3oz demerara sugar
demerara sugar, for sprinkling
130驳/4戮辞锄 ground almonds
1 vanilla pod, split and seeds scraped
130驳/4戮辞锄 butter, plus extra for greasing
100ml/3陆fl oz double cream
170g/6oz free-range egg whites
4 free-range egg yolks
300ml/10fl oz full-fat milk