1/2 cup sugar
1/4 cup water
Using a vegetable peeler, remove zest from oranges in 1 1/2- to 2-inch-long pieces. Cut the pieces into very thin strips, about 1/8 inch wide. Cook in a small saucepan of boiling water for 5 minutes. Drain. Bring more water to a boil and cook the orange peel for another 5 minutes. Drain.
Bring sugar and 1/4 cup water to a simmer in a small saucepan, stirring until the sugar dissolves. Add the orange peel, cover and simmer for 3 minutes. Transfer the syrup and peel to a bowl. Cover and chill overnight.
Using a slotted spoon, transfer the orange peel to paper towels to drain before using.