PLEASE SUBSCRIBE!!! My brother, dad, and I made this video to show how we make our rockets. We all agreed that this is the best method to do it. I realized that the thing I pointed to wasn’t a Mentos, so disregard that part.

http://www.youtube.com/v/2wfppG7Tt0k?f=videos&app=youtube_gdata

Read more here:
Diet Coke and Mentos Rocket: The Best Way