More than 206,000 people have viewed the video since December 2015

Layers of soft ice cream and liquid chocolate are layered on baking trays

The cakes are mass produced on a factory converyor belt

It's the minute-long video that has the internet mesmerised - and solves one of ice cream's greatest mysteries.

A factory production line that mass produces Viennetta ice cream cakes has revealed just what it takes to construct the intricate dessert.

Layers of melted chocolate and soft ice cream are folded on top of one another at rapid pace before being sliced in to cake-sized squares - with the malformed pieces haphazardly chucked in to a bin.

Mesmerising: A minute-long video shows how Viennetta ice cream cakes are mass produced

Delicious: Soft ice cream and melted chocolate is layered together to form the intricate cate

Going viral: Since the video was uploaded in December 2015 it has been viewed more than 206,000 times

The video has been viewed more than 206,000 times since it was uploaded to a Chinese Facebook page on December 3.

It begins with a series of baking trays being placed on a conveyor belt.

The trays are then covered with a layer of ice cream, quickly followed by a layer of chocolate.

Past pace: The cake is constructed in a series of layers atop baking trays in quick succession

Sliced up: The single cake was chopped in to pieces to be packaged separately

Coming together: The video is mesmerising to watch as the cake quickly takes shape on the conveyor belt

The process is repeated a number of times to build the bottom layers of the cake.

What follows is truly mesmerising to watch.

A thick layer of ice cream is rapidly folded atop the bottom layers to create the centre, and it all happens so fast the ice cream itself is a blur.

Finished product: Finished cakes travelled along the conveyor belt, presumably to be packaged

Gone to waste: The imperfect pieces were discarded in to a large waste bin

The cake is again topped with a layer of ice cream and chocolate, before a thick swirl of ice cream is piped through the middle of the cake.

The Viennetta has one last layer, before it is rapidly sliced in to cake-sized pieces.