RuneScape Classic Wiki
RuneScape Classic Wiki
The main RuneScape Wiki has an article on: Worm batta
The Old School RuneScape Wiki also has an article on Worm batta.

The Worm batta is a type of gnome food. It can be purchased at the Gnome Restaurant.

Making battas requires at least level 25 cooking. To make a worm batta, mould a batta from Gianne dough. Bake it. Put gnomespice on a king worm and put it on the batta. Add cheese and bake. Finish with equa leaves.