This is a great non-alcoholic drink that I have enjoyed since I was little. The name comes from one of the "Cat Who" books by Lillian Jackson Braun.
Fist off, the amount you make doesn't matter, just make sure you keep the ration of 3:2.
Pour 3 parts soda water into a glass. Make sure you add this first, or it won't mix as well.
Next, add in your 2 parts of cranberry Juice.
You should be able to see the cranberry juice swirl around in the soda water, sort of like blood in water. Once it settles (Which it does quickly) you can drink it now, or mix it up a bit more if you like. Enjoy!
And just for reference, "Que" is not pronounced like it is in spanish, it is "cue" not "kay" :P
More info on how to make a Que Cocktail