1 pkg (4-serving size) sugar-free gelatin, your choice of flavor/color
3/4 cup boiling water
1/2 cup cold water
1 cup melon balls, your choice of cantaloupe, honeydew, or watermelon
Dissolve the gelatin completely in the boiling water.
Combine the cold water and enough ice cubes to measure 1 1/4 cups; add to the gelatin mixture and stir until slightly thickened. Remove and discard any unmelted ice.
Measure out 1 1/3 cups of the gelatin and add the melon balls.
Divide into individual serving dishes or pour into a medium serving bowl.
Beat the remaining gelatin mixture at high speed with an electric mixer until thickened and doubled in volume. Spoon over the gelatin in the dishes/bowl. Chill for 2 hours or until completely set.
Garnish with mint leaves, additional melon balls, etc, if desired.