Here's a question for you.
What are the advantages of making soap as our grandfathers used to do - that is, using lye solutions of increasing strength and removing the excess lye from the reacted mass as you go on, after causing it to separate by adding a sodium chloride solution?
I know that by this process also the glycerine is removed from the soap along with the spent lyes, but, when making toilet soap, it was subsequently recovered and incorporated to the finished product.
Posted by paola
(Carried forward from summerbeemeadow.com for continuity)