Cut the orange peels in half and remove all the pulp and white pith. Once clean, slice them into thin strips or small cubes.
Place the peel strips in a saucepan with water and bring to a boil over medium heat. Once the water starts boiling, cook for 3–4 minutes, then drain. Repeat the process one more time to ensure there's no bitterness.
In the same saucepan, add the peel strips, water, and sugar. Simmer over low heat for about 20 minutes, until the peels absorb the sugar.
Transfer the candied peels to a baking sheet lined with parchment paper or to a wire rack. Spread them out evenly and sprinkle with sugar. Let them air dry for at least two days, or, if you prefer, use the oven at the lowest setting with the door slightly open to speed up the process.
