Purple Rain: 1½oz Gin. 4oz Cranberry Juice (or to ¾ fill) Splash of Blue Curacao. Splash of Sour Mix. Splash of Club Soda. *A splash is less than ½ oz. This is almost never measured. Basically, a quick tip over of the bottle should do. - You can substitute the Club Soda for Sprite or 7-up. - If you're feeling for a stronger drink, more Blue Curacao can be added.