Soap made from human corpses
During the Nuremberg Trials, Sigmund Mazur, a laboratory worker at the Danzig Anatomical Institute, said that soap had been made from the bodies of dead people at Stutthof concentration camp.  He said that 70 to 80 kg of fat collected from 40 bodies could make more than 25 kg of soap.  He also said that the finished soap was kept by Professor Rudolf Spanner.