I’ve been wanting to do this and found a recipe that uses volume and not weight for its ingredients. Do you use the same pots/pans/blenders for soap as you do for food? The only thing holding me back right now is finding good used things to do this with so I don’t have to use my food items.
Soap cleans. It is ok to use cooking pots, pans, stirrers etc for soap making. The lye, sodium hydroxide, is water soluble, and also washes out, no problem. Use stainless steel pots etc.
I will send you our aproximations on lye, fat etc later. I am on my way out the door, will do so when I get back.