In a saucepan, combine sugar and water. Bring to a boil over medium heat, stirring until sugar is dissolved.

Add Kool-Aid and gelatin. Stir constantly until gelatin is completely dissolved.

If desired, stir in citric acid for extra sourness.

Pour mixture into a lightly greased 9x13 inch pan. Let set in the refrigerator for at least 2 hours, or until firm.

Cut into strips or desired shapes and enjoy!