Put the whole oranges into a large saucepan, cover with water and bring to a boil with the lid on. Simmer for 20 minutes, strain off the water and top up again with cold water, bring to the boil ...
For the ice cream, make a custard base ... Gas 3 and grease and line a 24cm/9½in loaf tin or a 20cm/8in cake tin. Weigh the orange pulp and keep 450g/1lb (discard the rest).
Grease and flour the cake tins. Line the base of each with silicone paper. Cream the soft butter and gradually add the caster sugar. Whisk until soft and light and quite pale. Add the orange zest ...
Put the cake on a board or plate. To make the frosting, stir the cheese and orange zest together. Spread evenly over the cake. Cut into small wedges to serve. This cake will keep in the fridge ...