1 orange, skin on
100驳/3陆辞锄 thick-cut orange marmalade
陆 tsp bicarbonate of soda
100驳/3陆辞锄 caster sugar
125驳/4陆辞锄 caster sugar
175g/6oz self-raising flour
1 vanilla pod, seeds removed (keep the pod)
100驳/3陆辞锄 unsalted butter, softened
250ml/9fl oz double cream
2 free-range eggs
5 free-range egg yolks
250ml/9fl oz full-fat milk
2 tbsp Bourbon whiskey