The yellow/blue cube in f102v2

[MarcoP]

ETA: Soap is also an ingredient in DIY plant pesticides. One book I'm going to have to check for more details at the library is "Crop Protection in Medieval Agriculture: Studies in pre-modern organic agriculture" by Jan C Zadoks

Hi VViews,
I agree that agricultural recipes are worth investigating.

Soap was also used in medical and cosmetic recipes. I attach two examples:

You are not allowed to view links. Register or Login to view. - a medical recipe for curing fistula

You are not allowed to view links. Register or Login to view. (lady's secrets) - a cosmetic recipe to lighten hair

And of course the cube could be something different from soap. So the range of possibilities is quite wide. But analyzing "pharma" paragraphs taking into account all the elements (images and labels) sounds like an excellent idea to me.