In a large mixing bowl, combine angel food cake mix and 3/4 teaspoon Kool-Aid® mix. Prepare cake mix according to package directions.
In a medium bowl, combine powdered sugar, hot water and grenadine syrup. If necessary, add additional water, 1 teaspoon at a time, to make icing of drizzling consistency. Drizzle icing over cake. Top with white chocolate curls. Makes 12 servings.