I read about making soap out of left over milk, and letting it sour naturally in the refrigerator..I can't find that post anywhere.. It is supposed to be very mild, and a good hard bar of soap.. It was said when it is cured it has a sweet smell to it.. There was no added FO.. I would like to make this...My Mother In Law, as long as I remember has always had to be very careful what type of soap she uses.. She is 77 and her skin has gotten very thin..I guess that is something we can all look forward to....Anyway any help would be appreciated. I have several oils and butters coming from the co-op that just ended, and would like to make some of this for her..It will be my first ever try at soap making.. So if anyone would care to mentor a first time soaper, and help me with this, I would be grateful... Also I might add I have also bought a Mr. do right 4# molds from one of the co-ops too..so I will use this to put it in So you can see I am really serious about this:D just need a little help..