The body creates acetone, which is highly flammable.
He added: “A range of conditions can produce ketosis, in which acetone is formed, including alcoholism, fat-free dieting, diabetes and even teething.
“So we marinated pork tissue in acetone, rather than ethanol.
“This was used to make scale models of humans, which we clothed and set alight.
“They burned to ash within half an hour.
