What does nutella add to the Coke+Mentos reaction?

Inspired by [this question on SFF.SE](https://scifi.stackexchange.com/questions/111068/whats-the-nutella-for).


The Diet Coke + Mentos experiment has been a popular one for a while now, and I've [read](http://mentalfloss.com/article/48759/why-do-diet-coke-and-mentos-react) a [little](http://www.eepybird.com/featured-video/coke-and-mentos-featured-video/science-of-coke-mentos/) bit [about](http://www.scientificamerican.com/article/bring-science-home-coke-mentos/) the science behind it.


I recently discovered [this](http://youtu.be/59L51yWUFiQ) video, where an Italian man adds Nutella to the mix1, to his great excitement.


However, I'm not clear on *why* he did this; I couldn't see a significant difference in the reaction (although my view was somewhat obscured by the condom). **What does the Nutella add to this reaction?**




---


1 Do ***not*** watch this video in a public place without headphones on (or the sound turned way down); he gets very, very excited when his ~~abomination~~ experiment (literally) blows up in his face




Nutella was used just to protect cola from incidental reaction with Mentos. And it makes more effective insertion - all mentos tabs are inside at the same time.


The reaction is completely the same with [simple Mentos](https://www.youtube.com/watch?v=nf1dFECSf60). (this video also is quite noisy)


This is not chemical reaction, is carbon dioxide evaporation.


 3