It has been demonstrated in a court of law that a Jaffa cake is not a biscuit. It is made of a sponge of the exact density as to reach the Einsteinian Density, that is, the border between cake and biscuit. On the underside of the buiscuit/cake (bake) is in an envelope of chocolate. Encased in the chocolate is a minituarised copy of the middle eastern city of Jaffa, save AK weilding no-good terrorists. Though tasty, it is slightly inferior to a Dreamcake, its equivalent in the dreamscape. People who have eaten Dreamcakes first, even if they have no memory of the dream, are always a little disappointed with a Jaffa Cake.