Dock's Treasure - How to use ingredients?

[Bjorkland]

Looking through the various cards translated by Dock I found in the Tomb Treaure-collection as well as the Magical Treasure-collection several cards with ingredients - things like Rat’s skulls, Shadow dust, Grave moss, Dragon bowel snails, Batwings, Pheonix feathers, Mandragora, Scales of Basilisk, and Black Lotus.

I was wondering if anyone knew how theses were intended to be used? Did Xarres (the original creator) or Dock create any rule set or similar for potion making?

[Kurgan]

Check the Quests section, I thought I saw there were Quest packs by the same author(s) that probably are where they are used. Otherwise it would just be whatever you want it to be, regardless of what the author intended! (or maybe there is a thread on here? I haven't tried searching for it yet, you might!)