Liquid Cardamine...

[Treewyrm]

What about the Outcasts/those familiar with them? Certainly someone with some cardi-expertise would recognize the fact that this is some special stuff, not something Outcasts generally carry around.

Is there some special process to distill liquid cardi that the 'casts haven't figured out?

Yea, it's not just distillation. May be eventually they'll figure it out (there is timeline after all, things get discovered in time, get to be known in various ways) but at the moment they are only trying, hence the rarity of the item and seemingly unusual locations where it is found at. The item at it's current stage is a subject to wild speculations and rumors. As a character (unless said character is nomad-affiliated) that's all you might know about it, but not where it comes from.

It is what you, as an Outcast character, add to the knowledge above generic information which is provided by the infocard text.

Infocards aren't meant to answer all the questions and give absolutely comprehensive information about everything you can click on. They're too limited by the scope level, just like our characters aren't all-knowing wizards. In many cases it's general availability scope, hence the lack of details provided in them. Considering rarity and unusual nature of the item there is little information on it available around at this period of time. You know, just like systems and factions commodities too... can evolve in terms of roleplay.