Soap: can you make it with body fat and is there an explosive spin-off?

Soap

Source: Hayati Kayhan/Shutterstock

On screen chemistry with Jonathan Hare

Tyler, the main character in Fight club, has set up a rather anarchic club. A truly gruesome part of Fight club is that they use human fat stolen from liposuction clinics as the tallow to make their soap! Tyler claims that these soaps are the creamiest possible. Can you really use body fat to make soap? 

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