Step 1

Preparation Cut peel on each orange into 4 vertical segments. Remove each segment (including white pith) in 1 piece. Cut into 1/4-inch-wide strips. Cook in large pot of boiling water 15 minutes; drain, rinse, and drain again.

Step 2

Bring 3 cups sugar and 3 cups water to boil in medium saucepan over medium heat, stirring to dissolve sugar. Add peel. Return to boil. Reduce heat; simmer until peel is very soft, about 45 minutes. Drain.

Step 3

Toss peel and 1 cup sugar on rimmed baking sheet, separating strips. Lift peel from sugar; transfer to sheet of foil. Let stand until coating is dry, 1 to 2 days. DO AHEAD: Wrap and freeze up to 2 months.