1Pour 1 tablespoon of the orange liqueur onto saucer or small plate. Onto another saucer or small plate, sprinkle sanding sugar. Dip rim of each of 2 martini glasses into liqueur then into sugar to coat lightly.
2Fill cocktail shaker with ice. To shaker, add remaining tablespoon orange liqueur and all remaining ingredients. Cover and shake. Strain into martini glasses.