This is called a chocolate fridge cake but it should be seen as a bit of a pantry cake as well, using what you have in the cupboard. All sorts of different-flavoured chocolate (ginger chocolate, chilli chocolate and so forth), biscuits, nuts, dried fruit or alcohol can be used, instead of what’s listed here, depending on what you have and what you like. The cake can be stored in the fridge, in a sealed container, for up to a week.