In the clip, posted to his business’s Instagram account, the Pleesecakes boss said: "Right, so we’re having a debate, I know this is a fact. Dan doesn’t believe it and Laura doesn’t believe it. Flakes don’t melt in the microwave.
"For comparison, we’ve got Cadbury Caramel and we’ve got Flake."
He then placed the two subjects on a plate and popped them in the microwave for 30 seconds.
Meanwhile, his office buddy told him: “Your smugness annoys me.”
When the time was up, Moruzzi revealed that the Caramel had transformed into an oozing mess, while the Flake remained perfectly intact.
The video has sent the social media platform into meltdown, with viewers stunned by the sweet scientific experiment.
“BUT WHYYYY, what is this magic?!” asked one Instagrammer.
“That’s scary, what if it’s not real chocolate?” asked another.
“You’ve broken my brain,” another commented.
However, one fellow user of the platform offered a logical explanation for the apparent phenomenon.
He wrote: “Flake is made from milk chocolate, the manufacturing process gives it a different arrangement of fat and cocoa solids, so the melting fat isn’t able to lubricate the cocoa particles to the point where they can flow.
“In a bain marie, a Flake will never melt. In the microwave, it eventually just burns.”
The user seems to have sourced their answer from by the BBC’s Science Focus magazine so it’s clearly legit.