Mint and pistachio chocolate fridge cake

This is called a chocolate fridge cake but it should be seen as a bit of a larder cake as well, using what you have to hand – which is why this is a Pantry recipe. 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.