Watermelon Lemonade

2 cups granulated sugar
3 cups fresh lemon juice (12 to 15 lemons)
3 quarts cold water
2 cups watermelon puree*
1/2 lemon (for glasses)
Superfine sugar (for glasses)
Lemon slices (for garnish)

Dissolve sugar in lemon juice. Add water and stir. Add watermelon pur e and mix thoroughly or keep the lemonade and watermelon separate - lemonade on bottom, pur e on top.

To serve, rub rims of glasses with half a lemon. Dip rims in superfine sugar. Fill glasses with ice and Watermelon Lemonade. Garnish rims with lemon slices.

Makes 12 servings.

* To make watermelon puree, blend seedless chunks of watermelon in blender or pur e with hand mixer until the consistency is smooth.