Throw the water and sugar in a large saucepan on high.

Toss in the cranberries and bring to boiling.

Keep at boiling until the cranberries start popping at regular intervals, like popcorn, and then reduce to medium heat.

Add the vanilla and marmalade, and stir thoroughly.

Mash the cranberries a bit with a masher.

When the mixture thickens and gels a bit, take it off heat, and let it cool.

Serve when cooled and completely gelled.