1 cup water
¼ cup sugar
¾ cup vodka
1 cup apple juice
1 cup apple liqueur (such as Sour Apple Pucker)
Combine water and sugar in a glass measuring cup. Microwave at HIGH 2 minutes or until sugar dissolves, stirring once; cool. Combine sugar mixture, vodka, juice and liqueur in a pitcher; stir to combine.
Place crushed ice in a martini shaker. Add vodka mixture to martini shaker in batches; shake well to chill. Strain about ½ cup vodka mixture in shaker into each of 10 glasses; repeat procedure with remaining vodka mixture, refilling ice as necessary. Serve immediately. Yield: 10 martinis.