Potion of Spirit Restoration building book?

[Farith]

Hello. I did not find any entries about this in existing topics. Sorry if was posted before.

Doing a "Potioning tutorial" I have a message from NPC:

 

"Portia: Great work... what's next? Aha! The potion of spirit restoration! This is probably the most-used potion ever. You will need a vegetal nexus of 4, as well as the knowledge of the potion itself. You will need 2 blue star flowers, 1 blue quartz, 1 wine and of course an empty vial. As you have advanced this far I'm sure you can find all of these common items with out my assistance."

 

If I get it correctly "knowledge" means you need to read a book. But there is no book of Potion of Spirit Restoration in EL.

And I believe "with out" must be "without".

[saxum]

The knowledge the NPC speaks of is the ingredients necessary to make the potion. NPCs are often obscure, swear like a sailor (despite filters) and sometimes lie.