Turn buns in butter so that both sides are lightly coated.
Spread marmalade over the buns.
Scatter sultanas across buns.
Heat milk with lemon rind – do not boil.
Whisk eggs with sugar then slowly whisk in the milk.
Strain milk onto buns and allow to stand for 15 minutes.
Grate nutmeg over pudding.
Stand pudding dish in a Bain Marie (stand the pudding dish in a large dish or tin half filled with warm water).
Cook for about 20 minutes until lightly set with just a wobble. The time will depend on the depth of the pudding – we used a shallow dish – but deeper dishes may take more time.
For the garnish: Remove a very thin layer of peel from the orange and/or lemon, put in a pan of hot water, simmer for 3 minutes until fruit softens, rinse in cold water and drain on kitchen paper. Sprinkle onto pudding.
