itch.io

Go to the Guide and look under ,,How to cure Bernand´´ 

https://docs.google.com/spreadsheets/d/1kk1nVwdcqxsqkysRpLgMoRE0wKDOmMXYfxKpDsBl...

You need to make some spectral syrup

First, you need to study at home for the cure, and you will learn the recipe for spectral syrup (the cure). But the recipe needs a mystery ingredient, Heat Occisia. You can ask the priestess at the temple about it, and she will teach you how to make it.

I am assuming you have already studied your book for all the standard recipes, because you also need red and blue pulps as ingredients