Mix all the ingredients into a dough like consistency, using milk only if mixture is too dry.
Shape and leave to dry till outer layer is dry enough to handle.
Wrap in paper and store.
If you want to add liquor add it to mixture while mixing (a tablespoon of the liquor of your choice).
Nuts can be mixed in it too.
Key Ingredients: icing sugar, butter, cocoa powder, vanilla essence, milk, cocoa