Twinkie - the yellow outside and creamy inside cakes can make your mouth water at their first sight, but a book "Twinkie, Deconstructed" suggests there some more that one should learn. The author of the book Steve Ettlinger says he was taken to multiple locations, including phosphate mines in Idaho to gypsum mines in Oklahoma, as he searched for the origins of ingredients of the Hostess Twinkie.

Ettlinger found that one of the Twinkie's ingredients is Calcium Sulphate, a substance that could transform into plaster if water is extracted out from it.

"They just dig it up and put it in a bag, it's that pure. I love the idea that we eat rock like that," says Ettlinger, according to the New York Post.

Some more ingredients that make the little snack cake puffy, sweet and creamy includes phosphorus, an element used to put the glow in tracer bullets and the bang in artillery shells, and polysorbate 60, an emulsifier derived from explosive ethylene oxide.

"To say that this does not suggest Twinkies or any other food product would be an understatement," Ettlinger told Newsweek. "There you are at an open rock face, wondering why they do all this for the sake of a little snack cake."

According to Ettlinger tracking down all the components of the snack cakes, which list 39 ingredients, was a major undertaking, especially after officials at Hostess refused to cooperate with the project.