Yeah, I should have mentioned that jojoba is the commonly accepted substitute for sperm oil, but there is another that I've only seen mentioned once...and I think it was Dan Theodore who said it.
I used to have a note saved that had the name, but I may have discarded it...
CM
Ha! Found it!
No, I didn't find my saved note, but I did find a document which contains the name...and it is a discussion of sperm oil substitutes.
http://books.google.com/books?id=g6R...5iFpuR-Tzju6oM
The substance is "meadowfoam" oil.
CM