Line a baking sheet with a silicone baking mat or a sheet of foil.
In a small saucepan, combine the sugar with the corn syrup, and 2 ½ tablespoons water.
Attach a candy thermometer to the side of the pan, and bring to a boil over medium heat.
Cook the syrup, without stirring, until the thermometer reads 300°, this will take 8 to 10 minutes.
Remove the pan from the heat and stir in the baking soda, Kool-Aid, and citric acid all at once.
Stir to incorporate the powder into the sugar.
Pour the syrup onto the prepared baking sheet then let stand to cool completely. The candy will not spread, so use a silicone spatula to spread it as thin or thick as you like.
Smash the candy into bite-size pieces, and store in an airtight container for up to 2 weeks.