2. In a large bowl, combine the cornstarch and eggs and beat with an electric mixer until light and pale, about 5 minutes.

I'm crazy for coconut desserts in general, but this coconut cream pie is one I dream about. The not-too-sweet custard is ...

Add the vanilla and rum and cook for a further 5 minutes to glaze. Cool and spoon onto the coconut cream pie. Sprinkle over the lime zest and extra coconut to serve.