Marmalade pudding and Bourbon custard

By Andi Oliver From Saturday Kitchen Ingredients For the marmalade upside-down pudding 1 orange, skin on 100g/3½oz thick-cut orange marmalade 100g/3½oz unsalted butter, softened 100g/3½oz caster sugar 2 free-range eggs 175g/6oz self-raising flour ½ tsp bicarbonate of soda For the bourbon custard 250ml/9fl oz double …