Testimony was given both by Nazis and by British prisoners of war about the development of an industrial process for producing soap from human bodies , the production of such soap on a small-scale basis , and the actual use of this soap by Nazi personnel at the Danzig Anatomic Institute .
After having cooled , the soap is poured into molds '' Testimony was given both by Nazis and by British prisoners of war about the development of an industrial process for producing soap from human bodies , the production of such soap on a small-scale basis , and the actual use of this soap by Nazi workers at the Danzig Anatomic Institute .