01 - Wash the oranges thoroughly under running water. Using a sharp knife, slice off the top and bottom of each orange. Score the skin into quarters and carefully peel away the rind, keeping a portion of the white pith attached for texture.
02 - Slice the peels into uniform strips approximately ¼ inch wide for even candying.
03 - Place the strips in a saucepan and cover with cold water. Bring to a rolling boil, then drain completely. Repeat this blanching process two more times to draw out excess bitterness from the pith.
04 - In a clean saucepan, combine the sugar and water. Stir over medium heat until the sugar has fully dissolved and the mixture is clear.
05 - Add the blanched peels to the syrup and simmer uncovered for 45 to 60 minutes, stirring occasionally, until the peels appear translucent and feel tender to the touch.
06 - Using tongs or a fork, lift the peels from the syrup and transfer them to a wire rack set over a sheet of parchment. Allow them to dry at room temperature for at least 2 hours, or preferably overnight, until the surface is no longer tacky.
07 - Place the chopped dark chocolate in a heatproof bowl set over a pot of barely simmering water, ensuring the bowl does not touch the water. Stir gently until the chocolate is completely melted and smooth.
08 - Dip each candied peel strip halfway into the melted chocolate, allowing any excess to drip back into the bowl. Arrange the dipped peels on a parchment-lined tray.
09 - Allow the chocolate coating to harden completely at room temperature, or refrigerate the tray for 15 to 20 minutes to speed up the process.
10 - Transfer the finished peels to an airtight container and store in a cool, dry place for up to 2 weeks.