After hearing about Oilahuasca, then more-so after learning about Enfleurage, I thought about something I read in the past.
My mom is kind of in to witch stuff, so she has a magic book. And there are some werewolf "spells". One time I looked some of them up, and there is one that I can't find the source of, but it seems to be pretty widespread as "A Werewolf Transformation Potion that Witches Used". Again, I can't find the source, but if you search "Cat Fat Wolf Skin Belt Parsley" on Google, you will find various websites that talk about this "Spell".
And the reason I specifically remember this spell is because the first time I read about it, I was reading that it was strange that parsley would be an ingredient, because it is NOT Psychoactive. The other ingredients were psychoactive, but should not have made anyone feel like a werewolf. But it is possible that the Apiole could have been activated into an ancient form of Werewolf Ecstasy.
Here is the "Spell" aka Ritual:
opium, poppy seeds, aloe, henbane, hemlock, parsley, solanine (an extract of night shade), and asafetida (a gum resin). After stirring all the components together , he will allow the contents to simmer. When flames leap up, he will begin his incantation: “Elect of all devilish host, I pray you send hither, the great gray shape that makes men shiver. Come! Come! Come!"
Having removed his clothing and put on a wolf-skin girdle, the devotee now rubs his entire body with a salve.
And now that I know about Oilahuasca, I am pretty sure that this is what the witches were brewing.Parsley contain Apiole, which is not active by itself, but when taken with the right Enzyme inhibitors, it is possible that it could be activated. And it is possible that it is an Enzyme inhibitor itself.
So basically, what I think was happening is, the witches would get someone REALLY worked up about the full moon, like really make them antsy about it. Like tell them that that is when the freaks come out and stuff. Then, once the person is worked up, the full moon comes along. You give them a belt made of wolf, or have them kill a wolf to make it. Then you have them kill a cat to get fat to mix with the plants so you can rub the oils all over your skin. So, doing this, while in the light of the full moon that you are worked up about. Might make the ecstasy effects kind of turn you into a mental "Werewolf".