I like to use organic oranges and lemons if the peel is to be eaten.
4 oranges
Grate off some of the orange and lemon rinds and squeeze out the juice.
Put the juice and the grated rinds into a bowl and stir in the sugar until it is dissolved.
Whip the cream stiffly and then gently fold into the juice mixture.
Put it into a serving dish and leave in a cool place.
If it is left too long the juice will separate out but it can be stirred back in quite easily.
I found this recipe for Orange Fool among my mother's 1930's cuttings from "Times". It is wonderful, if somewhat unhealthy.
Ingredients for 6:
one lemon
25 - 50 g (1 - 2 oz) sugar - depending on taste and the oranges
450 ml (3/4 pint) of double cream
To make other fruit fools, such as red currant, use about equal quantities of cream and fruit juice or puree.