This nut bar contains nuts The Plain English Campaign has criticised Cadbury for warning that a chocolate called Nut Secret contains nuts. Boxes of Cadbury Milk Tray also warn that chocolates called Hazelnut Caress and Hazelnut Heaven contain nuts, and the pressure group says they are lacking a "common sense ingredient." But the Anaphylaxis Campaign, a pressure group for people with food allergies, said shoppers would rather have over-labelling than uncertainty.