JEAN-GEORGES'S ORANGE DUST

Steps:

• Preheat oven to 350 degrees. Using a vegetable peeler, peel oranges, yielding 8 to 10 broad strips from each fruit. Using a paring knife, scrape white pith from inside the peels.
• Place the peels in a small saucepan with 1 cup water and sugar. Set over high heat, and bring to a boil. Reduce heat to medium, and simmer until the liquid becomes syrupy, 10 to 15 minutes. Remove peels, and drain.
• Line a baking sheet with aluminum foil, and spread with oil. Scatter the cooked peels on the foil, spaced so they aren't touching.
• Bake peels until dry, being careful to avoid any browning, about 15 minutes. If they begin to brown, reduce oven temperature. Transfer to a wire rack to cool at room temperature in a dry place.
• Crumble peels, then grind in a spice mill or coffee grinder until powdery. Store in an airtight container. Orange dust will retain its peak flavor up to 2 weeks, but it will keep virtually forever, gradually losing its intensity.