01 - Wash the oranges thoroughly under running water. Using a sharp knife, slice off the top and bottom of each orange, then score the skin into four vertical sections. Carefully peel away the skin, keeping a thin layer of white pith intact for texture.
02 - Slice the peeled skins lengthwise into uniform strips approximately ¼ inch (0.5 cm) wide.
03 - Place the orange peel strips in a saucepan, cover with cold water, and bring to a rolling boil. Drain completely, then repeat this blanching process two additional times to draw out excess bitterness from the pith.
04 - In a clean saucepan, combine the granulated sugar and water. Stir constantly over medium heat until the sugar has fully dissolved and the mixture is clear.
05 - Add the blanched orange peel strips to the sugar syrup. 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, carefully lift each peel from the syrup and transfer to a wire rack set over a sheet of parchment paper. Allow to air-dry at room temperature for at least 2 hours, or ideally 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 and occasionally until the chocolate is completely melted and smooth.
08 - Dip each candied orange peel strip halfway into the melted chocolate, allowing the excess to drip back into the bowl. Arrange each coated strip on a parchment-lined baking tray, leaving space between pieces to prevent sticking.
09 - Allow the chocolate coating to harden completely at room temperature, or place the tray in the refrigerator to speed up setting. Once firm, transfer the finished pieces to an airtight container and store in a cool, dry place for up to 2 weeks.