Put the water and sugar in a large microwaveable cup or bowl, and microwave on high for 30-second intervals until the sugar has completely dissolved.
Empty the cranberry sauce into another large microwaveable bowl. Microwave for 30 second intervals until the cranberry sauce has melted into a thick syrup. Stir in between each interval
Slowly combine the sugar syrup and the cranberry sauce. Whisk together until completely smooth.