Traditionally, the filling was buttercream (which is still used in home-made recipes) but nowadays cheaper fats have replaced butter in mass-produced biscuits.
Royal icing, marzipan (or a less sweet version, known as almond paste), fondant icing (also known as sugarpaste) and buttercream are used as covering icings and to create decorations.
Jack's vanilla raspberry cake with meringue buttercream frosting, while not up to the standards of the top 2, also gets positive feedback and saves him from elimination.
