Separate the egg. Stir egg yolk, starch and 4 tablespoons of milk until smooth. Bring the rest of the milk, sugar, salt and espresso powder to the boil while stirring. Remove from the stove. Stir in the starch and let it swell for about 3 minutes. Let it cool down a little while stirring.
Beat the egg white until stiff and fold into the cream. Divide the pudding between four dessert glasses. Leave to set in the fridge for approx. 2 hours. Whip cream and vanilla sugar until semi-solid, stir in liqueur. Distribute as a blob on the pudding. Peel off the chocolate with a peeler and sprinkle over the desserts