To make the ice cream, whisk together the egg yolks and sugar in a heavy pan. Heat the cream to simmering and slowly pour onto the egg mixture, whisking constantly. Cook over a medium heat until the custard coats the back of a spoon, whisking all the time. Do not boil. Remove from heat and cool.
Place the apples in a heavy pan, add the juice and rind of the orange, the castor sugar and