Wash 2 to 4 oranges thoroughly
Slice oranges into thin rounds or strips
Remove seeds
Bring a pot of water to a boil
Boil the orange slices for 1 to 2 minutes
Drain and repeat blanching 2 more times
Combine equal parts sugar and water in a saucepan
Heat until the sugar dissolves
Add the orange slices to the syrup
Simmer on low heat until the peels turn translucent
Stir occasionally to prevent sticking
Remove the oranges with a slotted spoon
Place them on a wire rack or parchment paper
Let them dry for several hours or overnight
Toss in granulated sugar if desired
Store in an airtight container