This was surprisingly one of the easiest things to make, except it was a little time-consuming because you have to mould each petal individually. Also you can't play with them for too long because the thin wafer of chocolate starts to melt. I made it for cupcakes but I think it would actually make more sense to make one big rose and use it as a cake decoration, to cut down on the amount of time spent.
200g dark chocolate (I used couverture)
1/3 corn syrup/honey
1. Melt the chocolate using a double boiler, and stir in the corn syrup or honey. Wrap in plastic wrap and refrigerate overnight. You can also store it for longer if you do not need to use it immediately.
2. When you are ready to use it, take it out of the fridge and leave at room temperature for about 15mins or until it becomes soft enough to be pliable.
3. To start with make a small ball of chocolate which will become the core of the rose. Then take a small bit of the chocolate, put it inside some greaseproof paper (folding the greaseproof paper onto itself) and roll it out on top of paper so you are not actually coming in contact with the chocolate itself. Then unwrap it from the paper (if it has become too soft then simply put it in the fridge for about 5 mins until it hardens) and mould it into a petal shape with your fingers. Before you shape it you may need to cut it so it is the right size for the petal.
4. Once you've shaped the petal curve it around the little ball of plastic you made earlier. Keep making petals and attaching them on until your rose reaches the desired size.