Using a paring knife, trim off the tops and bottoms of the orange. Then, use a vegetable peeler to peel the oranges from top to bottom, into 2-4 inch segments. Press the peeler firmly against the orange to collect nice wide strips.
4 large Oranges
Remove as much of the white pith as you can with your paring knife, then slice the strips again into even, thin slices, about ¼ inch thick.
Prepare a bowl of ice water in the sink. Then, place a pot of water on the stove over high heat, and bring to a boil. Once boiling, add the peels. Let them boil for only a few seconds before removing them and dunking them in the ice water.
Repeat the process of placing the peels in the boiling water and then ice water 2-3 more times. This process removes the bitterness from the pith without leaching out any of the flavor of the rind.
Place the pot back on the stove over medium heat, and add the measured filtered water and sugar. Then add the peels, and bring to a simmer.
4 cups Granulated sugar, 3 cups Water
Let the peels simmer for 20-30 minutes. The peels are done once they're nice and soft, but still vibrant in color.
Add in the vanilla, and take the pot off the heat. Let the peels rest in the syrup for another 10 minutes
1 teaspoon Vanilla extract
Using tongs or a slotted spoon, remove the peels from the sugar syrup and place on a wire rack with a baking sheet or parchment paper underneath. Let cool for 5 minutes.
Once the peels are cool enough to handle, pour the remaining sugar in a bowl and toss the peels in the sugar until well coated. If you want, you can pulse the sugar in a blender first to make a finer grain.
Place the sugar-coated peels back on the wire rack, and let rest in a well ventilated area for 1-2 days, or until the peels are completely dry. You'll know they're dry when they're no longer tacky or sticky to touch. Store, and enjoy!