Prep the Oranges: Thinly slice the oranges (¼ inch) and remove any seeds.

Make the Simple Syrup: In a large saucepan, combine sugar and water. Bring to a boil over medium-high heat, stirring occasionally until sugar dissolves. Reduce heat to low.

Simmer the Oranges: Gently add the orange slices to the syrup, ensuring they're fully submerged. Simmer uncovered for 2 hours, stirring occasionally, until the peels are translucent and candied.

Drying the Candied Slices: Place a wire rack over a baking sheet. Using a slotted spoon, transfer the orange slices to the rack and let them dry for at least 24 hours (ideally longer) at room temperature.

Chocolate Dipping: Prepare a sheet of parchment paper on your counter or a baking sheet. Melt the dark chocolate in a double boiler or a heatproof bowl set over simmering water. Once melted, dip half of each dried orange slice into the chocolate and set it on the parchment paper to harden.

Finishing Touches: Let the chocolate set for a few minutes, then sprinkle with flaky sea salt for a sweet and salty contrast.