This is an awesome way of making tasty, pretty cakes. You can model it just like royal icing except, most importantly, it tastes of chocolate.
It's a very easy recipe: 500g chocolate and 7tblsp of golden syrup.Heat the syrup and then take it off the hob. Stir in broken chocolate then leave to cool for an hour or so.
When you mould it, take care not to handle it for too long as it will melt. Don't worry about keeping it in the freezer. If it's not sticky enough, add more golden syrrup.
The above recipe makes enough to cover a lasagne dish size cake.
You rip what you sew!