I definitely did not go to my boss's house and set it off in a hole in his back yard with him. A tennis-ball sized amount definitely did not rattle the windows and cause a percussive shock wave that echoed across the neighbourhood for several seconds. It also did not embed shards of the ceramic flower pot two inches into the clay around it. It also certainly did not have any covering or anything, and did all of this completely unpacked.
Recipe via PM to those I trust