Lime Daiquiri Sorbet

Makes 1 quart.

2 1/2 cups fresh lime juice (10 to 12 large limes)
Grated zest of 3 limes
1 1/3 cups granulated sugar
1 cup rum
1/2 cup water

Process all ingredients in a blender or food processor fitted with the metal blade. Freeze in an ice cream maker, following manufacturer's instructions.