Also known as moro oranges, this dramatically hued fruit is usually available from January until April. Their color comes from anthocyanin, the same disease-fighting antioxidant pigment found in blueberries, red wine and plums. They may be small, but each orange packs nearly a full day's worth of vitamin C.
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Finely grated zest or long, thick peels for cocktails? The Crisp Zester ($13; crispcooking.com) does it all; there's a channel knife for curls, a scoring blade for easier peeling and two zesting blades.