A perfect juju fishing flask is a potion flask containing up to 6 doses of perfect juju fishing potion. It is created by using a potion flask on perfect juju fishing potion with at least six doses of it in your inventory, or by talking to Teplin Macagan in Oo'glog to do it in noted form. The potion increases the fishing success chance by 5%, which stacks with the crystal fishing rod, and also provides the benefit of the basic juju fishing potion: a one-third chance of catching a raw baron shark instead of a normal shark when fishing sharks. The effects last one hour per dose.