You'll need:
- 3/4 cup pureed watermelon (use as much actual watermelon "juice" as possible)
- 2 cups water
- 1/2 cup sugar
- 1/3 cup corn syrup
Directions:
- Combine all ingredients and cook on low heat, stirring constantly until the sugar dissolves completely.
- Allow to cool.
- Pour into sturdy plastic cups halfway full (the Rubbermaid or Tupperware sippy cups are perfect for this and yogurt containers -- plastics #1, 2, or 5 -- work as well).
- Cover and freeze until solid.
- Eat by scraping a spoon across the top.
Variation:
You can make lemon ice by substituting the pureed watermelon for 1/2 cup lemon juice and increasing the water by 1/4 cup. Try making other flavors with other juices as well.

