Separate the egg whites from the yolks. Mix the yolks with the sugar in a pan. Fold in the cornflour and 2dl milk and dilute. Clean the
lemons and grate the rind. Then squeeze the juice and add to the pan. Simmer continuously stirring until thick (about 3 minutes). Remove from heat and allow to cool. Whip the egg whites and carefully add to the cream. Transfer to individual glasses and leave to cool in the fridge before serving.