Specialized shorthand and not a language

[oshfdk]

I know and I've seen that and while that post is very all over the place I still think there is a truth behind it. It makes so much sense to use shorthand if you would write something not meant to be shared with everyone and maybe only with druids or doctors of that era.

To me this

"Take fresh herbs from root pieces, extract small amount of oil essence from flowers.
Prepare flower water (infusion) with chopped compound root and leaf powder pieces."

makes absolutely no sense at all. Which root? What flowers? There is not even a picture on this page. In this system, how exactly are specific plants named? Quantities? Temperatures? Ingredients other than non-specific flowers and roots?