Boil 6 hours. Dip prepared pudding cloth into boiling water. Remove from water and ring.
Spread hot cloth out on bench, quickly rub in plain flour (about ⅓ cup) to cover large area for batter. Spread to moderate thickness, as this creates the skin on the fruit cake.
Place floured cloth in colander, place mixture in centre. Gather ends of cloth together, hold pudding up, pat into shape.
Tie pudding securely with string as close to pudding mixture as possible. Any air gap between mixture and knot will allow water seepage and ruin the cake. Including a loop will make retrieval easier later.
Place tied mixture into boiling water.
Boil rapidly for 6 hours.
Replenish water as necessary.
There must be enough water for the pudding to move freely.
Pudding must float at all times or it will burn.