Ratafia Pancakes

For the pancakes115ml milk1 large egg1 large yolk60g plain flour Butter for frying For the custard250ml milk2 large yolks30g cornflour50g caster sugarpinch of ground clovespinch of ground mace1/4tsp ground cinnamonfresh grated nutmeg to taste1tbs cream sherry/Marsala/Madeira/Mead (optional) For the glaze1 large egg whitecaster sugar for sprinkling To finish