8 ounces watermelon, chopped into 1 inch dice
3/4 cup sugar
1/2 teaspoon vanilla extract
1/2 teaspoon salt
Club soda or seltzer
Puree watermelon syrup in blender. Strain into small pitcher and bowl. Refrigerate until needed.
Mix watermelon syrup with club soda or seltzer to desired strength for flavored soft drink.