If you can’t find Arnott’s Chocolate Ripple biscuits or want to try something different, you can substitute for any crunchy, plain and sweet chocolate-flavoured biscuit or cookie. Or to mix-up the flavour, Butternut Snap biscuits, Ginger Nuts or Biscoff cookies can be used. For a gluten-free version, use gluten-free Chocolate Ripple biscuits.