This is a wonderful way of making a luxury treat from something that would otherwise be thrown away. The other great thing about it is that the only time-consuming bit is the chocolatey part, and you can save that job until you feel like doing it. You don't even have to go out and buy oranges specially – just peel them carefully when you have them and store the peel in the freezer until you have enough. This is best made with dark chocolate with the highest possible cocoa solids. Green & Blacks do a cooking chocolate which is good for melting.