1-Fill a large bowl with ice water and set it aside to quickly cool the oranges.

2-Bring 4 cups (960 ml) of water to a boil in a large saucepan, then add the orange slices and boil for 2 minutes to cut the bitterness.

3-Right away, move the slices to the ice water to stop cooking and keep them firm.

4-In the same pan, mix the remaining 4 cups (960 ml) of water with 4 cups (800 g) of granulated sugar, and bring it to a boil while stirring until the sugar dissolves.

5-Lower the heat to medium-low, add the orange slices, and simmer for 45 to 60 minutes. Swirl the pan gently every 15 minutes until the rinds look slightly translucent.

6-Take out the slices and lay them flat on a wire cooling rack over a baking sheet; let them dry for up to 24 hours.

7-If you like, coat the dried slices with extra granulated sugar or dip them in melted chocolate; then store them in an airtight container in the fridge for up to one month.