stir cornstarch and kirsch collectively in a small bowl. add the slurry to the cherries and continue to prepare dinner, permitting the cherry sauce to thicken (approximately 5 minutes), stirring often.stir cornstarch and kirsch collectively in a small bowl. add the slurryto the cherries and continue to prepare dinner, permitting the cherrysauce to thicken (approximately 5 minutes), stirring often.stir cornstarch and kirsch collectively in a small bowl. add the slurryto the cherries and continue to prepare dinner, permitting the cherrysauce to thicken (approximately 5 minutes), stirring often.