Lime Ice on Watermelon

Directions

1. 1
   Boil sugars, water, and star anise, stirring, until sugars are dissolved.
2. 2
   Pour syrup through a fine sieve into a bowl, discarding solids.
3. 3
   Cool syrup.
4. 4
   Stir in lime juice.
5. 5
   Freeze in a 13- by 9- by 2-inch glass dish, stirring occasionally with a fork, until liquid is frozen and granular, about 6 hours.
6. 6
   Serve lime ice on watermelon.