People are just realizing what KitKat wafers are actually made of – it’s answered a year-old question but raised another

"They claim it's just a crisp wafer, but what they actually use to make it might surprise you," he began.

"Some KitKats get broken while they're being made, and instead of throwing them out, the company crushes them up and adds sugar – and that is what's in the inside of a KitKat bar," he said in the short clip.

"It's literally crushed up KitKats," he said.

But the ingredients of the secret inside of a KitKat bar have been revealed before.

The BBC's Inside the Factory program did an episode about Nestle's KitKat production in the UK in 2018, and explained how the process works.

Quality assurance technicians remove imperfect bars, that are not completely covered or have air bubbles, and put them aside rather than throwing them away, the program explained.

Then the duds are ground up into a paste and used to fill the next batch of KitKats.

With over 25 million views and almost one million likes since Zach's video was shared less than a year ago, hundreds of people shared their comments – especially one burning question.

"B- but h- h- h- how d- did they m- make the f-first kitkat?," one person hesitantly asked.

When The Sun first shared this revelation in 2022, readers completed a poll asking if they knew that "KitKat's had KitKat inside?".

About 17% each responded "yes" or "no", but a whopping 66% simply asked: "So what was the first KitKat made of?"

On social media, many users made jokes like, "How did you make Kit-Kat ? It's made from Kit Kat which is made from Kit Kat which is made from Kit Kat which is made from Kit Kat ...... "

"They took recycling to a whole nother level," another quipped.