How could we approach the Pharma and Recipes?

[voynichbombe]

Not necessarily, quantities and times in the Middle Ages were often not expressed in numbers. Instead, descriptions such as "a handful of them" or "running around the field twice" were used. Recipes were therefore often very imprecise.

This is also true until the early 20th C. I own a cookbook for sweats written by my great-grandmother, started sometimes shortly before 1900. There is no uses of weights in it, it only sometimes refers to some quality like "good", or "good amount". There are also no temperatures and times for the oven, only "bake hot" or "slow", something like this.