Get a large (13-14oz) highball glass. Cut a wedge of orange and rub it round the rim. Lightly sugar the rim. In a cocktail shaker, mix a handful of ice cubes, three ounces of good orange vodka (Absolut Mandrin or Stoli Oranj are perfect), 1/2 oz of Cointreau, 1oz of Seville orange juice and 7oz of orange juice (fresh-squeezed if you can get it, but under no accounts any brand with added sugar). Shake vigorously et voilá!
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