Bring the ginger ale and sugar to a boil in a large pan.
Once you reach a boil add the cranberries and return to a boil.
Turn the heat down until the mixture is boiling gently. If you let the mixture boil too hard you may end up with a mess on your hands.
Let it boil for 10 minutes.
If you wish to make whole cranberry sauce, just pour it into a bowl. For jellied sauce: push the mixture through a sieve to strain out the skins. This will produce a sauce must like that in a can, expect with a better, fresher flavor.