Celebrity MasterChef judge John Torode was left disappointed with star Rochenda Sandall after her pistachio ice cream failed to set in time during their final challenge on the show. Tonight, Sandall, Vito Coppola and Craig Doyle were asked to create two dishes for judges Torode and Gregg Wallace, giving them the chance to show off their culinary skills one last time. Sandall decided to cook a rump of lamb with mint sauce, fondant potato, a kale, anchovy and hazelnut bonbon, onion cream, charred spring onion and a lamb and red wine sauce for her main. The dessert of choice was an orange polenta…