An unfinished bowl was previously obtained during Gnome cooking when making a Worm hole. It could be made by adding four King worms, two Onions, and some Gnome spice to a Half baked bowl, then baking it. Finally, Equa leaves were added to make a worm hole. If a mistake was made at any point, an Odd gnomebowl would be received instead.
As this process was unnecessarily intricate, it was altered with the Gnome Restaurant rework in 2006. Now, all ingredients are automatically added to create a Half made bowl, which can then be cooked to produce the new Unfinished bowl. Once again, equa leaves are used to convert this into a Worm hole.
Because the item was removed before 2007, it has never been present in Old School RuneScape. However, it remains in the game files.