Pennyroyal was also what Persephone used to induce abortion in Destroyer of Light. Traditionally it has been used to treat various ailments, including headache, but I don’t think it’s recommended to use at all nowadays because of its toxicity.
Pennyroyal tea is still a popular drink in Spain, called poleo. In Andalusia most bars have it as an alternative to coffee or alcohol. I often drank it while accompanying drunks. It is popular for helping the digestion and stopping nausea, perhaps particularly in drunks later on in the evening. I think the potential toxicity requires a lot of concentration, definitely be careful with the essential oil.
I recently caught up to date with this series. It is just my cup of tea, thank you so much.
Oh, is that so? Interesting.
Glad you're enjoying my comics. ^^