OY VEY @germanshepherd WANTS TO MAKE SOAP OUT OF jEWS!!!
Is there a problem with that?
Yes. What would happen to the soccer balls and lamp shades if you start making soaps out of them?
You don't need the skin, just the fat for saponification.
I don't think they would sell well.
"Organic fatty acids" is all you need to say. Marketing is a science, and art, and a great evil upon humanity.