Begin by pulling fresh green grapes from their vine, rinse under cool running water, and gently pat dry.

Place the grapes in a single layer on a baking sheet or plate and freeze for 15 to 20 minutes.

In a mixing bowl, add two packets of unsweetened Kool-Aid and 1/3 cup of sugar. Whisk together.

Divide chilled grapes into small ziplock bags, add Kool-Aid mixture, then seal and shake until evenly coated.

Spread the coated grapes in a single layer on a parchment-lined baking sheet, then freeze for at least 24 hours.

After 24 hours, remove grapes from the freezer and serve immediately for the best taste.