Crysknife wrote:The BG used an overdose of Spice. The WoL was something only the Fremen used to that point.
This is the only citation I can come up with right now, which doesn't really prove much of any of our ideas...
pg. 233 of the PDF version:
And she knew with a generalized awareness that she had become, in truth, precisely what was meant by a Bene Gesserit Reverend Mother. The poison drug had transformed her.
This wasn't exactly how they did it at the Bene Gesserit school, she knew. No one had ever introduced her to the mysteries of it, but she knew. The end result was the same.
So I guess Jessica wouldn't really know EXACTLY what the BG use, because she never goes through THEIR version of the ritual....