Place cake tin into a large pot with a tight fitting lid. Steam on stove top for approximately 2 hours or rest the cake tin in a container with water in the oven at 180°C (350°F) and steam for approximately 2 hours.
Method Note: See recipe for Rum Butter Sauce.
Have adequate boiling water ready to replenish container at intervals during steaming.
To Serve: Allow cake to cool, pour on sauce, slice and serve.