Put in a saucepan four egg yolks with four ounces of powdered sugar, and stir with a spatula until it becomes a whitish color. Add two gills of sweet cream, little by little, beating continually, then grate in the rind of an orange. Place the pan on a slow stove, and stir well for four minutes, being careful not to let it boil; take it off, strain through a sieve over the pudding, and serve very hot.