From there we basically shook, inserted, and squeezed. This was our first attempt. As you can see, we didn’t get the straw deep enough and the whipped cream erupted out the top. Lesson #1: go to nearly the bottom of the cup with your straw.
Our next attempt worked out much better. You can see we achieved a nice layer of Jell-O above the ghost so it looks like he’s floating around in the Jell-O.