Candy bars are a hot topic for most of us. Not only talking about our favorites, but about how they're made. Why is a Reese's Pieces so much better than when we try to make chocolate and peanut butter goodies? How do they get all that caramel inside a Caramilk? So many questions.

For years I've been content just to eat them and wonder quietly, but now that I know what's inside a Kit Kat...well, I need answers.

You wouldn't think a Kit Kat was a particularly difficult candy bar. It's delicious sure, but mysterious? Give me a break.

Truth is though, that a Kit Kat isn't only the most confounding candy bar, it's also one of the biggest riddles of our generation.

It all came to light during the airing of a documentary on BBC Two. A film crew was allowed inside a York factory where Kit Kats are made. The filmed scenes from various stages of production, led by an employee of the factory. The mind-blowing part happened when the employee described what was about to happen to a stack of crunched up Kit Kats, saying there would be a "rework, where they're used for fillings for the wafer."

Kit Kats have a delicious wafer which has layered chocolate inside, but this means that wafer is actually made of broken up Kit Kats. Kit Kats are made of Kit Kats!

There's the chicken and the egg and then there's this.

How deep does this go? Was there one original Kit Kat which was broken down and used to make the Kit Kats we all enjoy today? So many questions.

It's important to note that the film crew was in the UK, where Kit Kats are made by Nestle, but here in the US, Kit Kats are a Hershey's product. Neither company has been very open about their chocolate secrets, but a Nestle UK spokesperson told Today that "the 'chocolayer' - the filling between the wafer of a Kit Kat - is made from cocoa liquor, sugar and a small amount of re-worked Kit Kat."

Almost 200 million Kit Kats are sold in the US every year, which makes me wonder how many broken up "re-worked" Kit Kats are being horded by Hersey, if that's how Hershey's makes them over here.

With such a mystery swirling around in my head I am sure of only one thing: I need a Kit Kat.