I have never read a spell book, did it take you very long, what else was in it??? My teacher always told me I could use more time with my spell book. Anyway you may be correct: http://www.google.com/url?q=http://www.youtube.com/watch%3Fv%3DJfeMlqS1gZU&sa=X&ei=2CMYT7GsFNDXtwfktMGcCw&ved=0CFIQuAIwBQ&usg=AFQjCNHZgWVw7tclgpcWR6-0xOjieBgoCw
I haven’t read one either, but I know pagan’s are into herbs... so I Googled.
Looks like there ARE potions that involve ingesting stuff.
So you could conceivably have hormonal, unrequited teenage girls (or boys) cooking up potions and giving them to other students for various “purposes.”