Ross Giblin/Stuff Some Whittaker’s chocolate blocks will be out of stock until late January at the earliest. (File photo) “Fortunately, because we source ingredients locally as much as possible, we have not been as affected by these supply issues until now, and no other products in Whittaker’s range are affected.” Production of Berry Forest and Berry and Biscuit would restart as soon as the ingredients arrived, she said. The news sparked a flurry of tongue-in-cheek comments from chocolate fans, with some suggesting Christmas might as well be cancelled. Facebook/Whittaker's Production of Berry Forest and Berry and Biscuit blocks will restart as soon as the imported ingredients arrive, Whittaker’s says.