Have ready a pan of ice mixed with a little water. In a heatproof bowl placed over a saucepan of barely simmering water (not touching bowl), whisk together the egg yolks and granulated sugar. Add the ginger or the orange zest and orange juice. Using a whisk or electric mixer, beat until light colored and thickened, 5 - 6 minutes. Remove the bowl from the heat and nest it in the ice water.

Continue whisking until cold. It will get quite thick. Set aside. In another bowl whip the cream until soft folds form. Add the confectioners' sugar and whip until stiff peaks form. Stir the cream into the egg yolk mixture just until blended and smooth. Cover and refrigerate. Stir well before serving, as it may separate slightly upon sitting.