Put the water (or cranberry juice) and sugar in a pot, and cook until the sugar is totally dissolved and the mixture begins to boil.
You'll hear the cranberries skin begin to pop (stand back as they can squirt at you!). Once all or most of the cranberries have popped, you could stop cooking. However, I choose to keep cooking, to make more of a jellied cranberry sauce.
Use this as a side, as a dessert, or as a garnish! Try it with your fall favorites, like Turkey, sweet potato, etc. Or try it with fresher flavors like fruit!