As posted on Dallas Morning News and sourced to Mary Kasprzak on blossomtostern.net

• 3 pounds red or yellow watermelon chunks
• ½ cup sugar
• ¼ teaspoon salt
• 1 tablespoon lime juice
• 2 tablespoons vodka

1. Cut away the watermelon rind and remove seeds.
2. Cut flesh into manageable pieces; add to blender or food processor and purée until liquid.
3. You should have about 3 cups of juice (purée more watermelon or set aside the extra juice for another use, as needed).
4. Pour into medium mixing bowl; set aside.
5. In small saucepan, heat ½ cup watermelon juice, sugar and salt until all sugar dissolves.
6. Remove from heat; add to bowl with watermelon juice.
7. Stir in lime juice and vodka.
8. Chill in refrigerator overnight, then process in ice-cream maker.

Recipe makes 1 quart of sorbet.