You will go to prison in many countries if you question this nonsense.
"Polish people still talk about the way soap was manufactured from the bodies of Jews.... The discovery of Professor Spanner's soap factory in Langfuhr proved that their suspicions had been well founded. Witnesses tell us that when the corpses were burned on pyres, pans would be placed beneath the racks to catch the fat as it ran off, but this has not been confirmed. But even if the Germans in Treblinka or at any of the other death factories failed to do this, and allowed so many tons of precious fat to go to waste, it could only have been an oversight on their part.
Blood, too, was found to be first-class combustion material"
- R. Auerbach, in A. Donat