1 blood orange, zest and juice
50²µ/1¾´Ç³ú fresh root ginger, peeled and grated
300g/10½oz Yorkshire rhubarb, cut into 5cm/2in pieces
20²µ/¾´Ç³ú custard powder
50²µ/1¾´Ç³ú plain flour
4g agar-agar
roasted almonds, grated, to decorate
50²µ/1¾´Ç³ú caster sugar
180²µ/6¼´Ç³ú caster sugar
80g/3oz demerara sugar
demerara sugar, for sprinkling
130²µ/4¾´Ç³ú ground almonds
1 vanilla pod, split and seeds scraped
130²µ/4¾´Ç³ú butter, plus extra for greasing
100ml/3½fl oz double cream
170g/6oz free-range egg whites
4 free-range egg yolks
300ml/10fl oz full-fat milk