If you haven't checked out the Soul Foodie's excellent blog, I highly recommend you do that.
In the meantime, the blog's author, Nesanel Yoel Safran, just reviewed Unlocking the Secret of the Erev Rav on Sasson, which I'm reprinting below.
If you'd like to learn more, and / or buy the book yourself, please go HERE.
Unlocking the Secret of the Erev Rav by B. R. Levy
Rivka Levy's Books: