One "it" should be enough here ("
Mash it into a paste"):
https://i.imgur.com/dUX4dqg.jpg The ingredients combination-feature in the 'MEDICINAL PURPOSES OF THE PALE' book doesn't work properly, at least for further attempts (incl. certain ingredients)
past the initial one you get +5 XP from (first snippet in the upper left corner).
The issue probably could be described in general as: certain ingredient combinations and their corresponding expected results being ignored and replaced with/defaulted to another, completely unrelated outcome, if that makes any sense.
For instance, if you start off with anything that includes rue as the base ingredient and in the following attempt mix something together with mint it properly shows the corresponding outcome ("
combination of mint and birch bark") but if the first attempt involved mint and the next one rue as the base ingredient it does not result in, for example "
rue and aloe vera make this poultice..." but the description of the concoction from the previous attempt ("
combination of mint and birch bark") instead.
In the illustrated case (see the screenshot collage) - once you
do include either ginger (as the 1st base ingredient)
and/or whiskey (as the "appropriate vehicle") it locks/incorrectly defaults the final response presenting you with the result to:
In this particular case the "
julep of mint" one, with the introduction of whiskey (third snippet upper right corner).
From there on any other ingredient combination that
doesn't include ginger results in the "
julep of mint"-result.
Once
ginger is brought into the mix (fifth snippet middle bottom) the "
julep of mint"-result is no longer brought up and gets replaced by the "
tincture of whiskey and ginger"-response as the new default outcome to any further ingredient combination from there on.
https://i.imgur.com/Ik0F9KH.jpg Very likely a result of the previously reported issue of the 'MEDICINAL PURPOSES OF THE PALE' book's ingredients combination-feature not working correctly but in case it isn't - the "aloe vera"-ingredient option is sometimes not referred to at all in the combination's corresponding outcome:
https://i.imgur.com/HGw5yD1.jpg 
