Never mind when we were kids......
When I was runnning an outdoor pursuits centre in France we had a glut of various flavoured mousse powders. We also used regularly to confiscate bangers from guests. The mousse powder would be dumped into the hole in the local football pitch where the goalposts usually went, followed by a banger with the fuse lit and any other object which could be used as a projectile (golf ball, pebble, some kid's teddy etc). There would be a thud, said object would be fired into the night sky followed by a cloud of mousse powder which would ignite with a great flash, leaving a strawberry, chocolate or vanilla flavoured mushroom cloud. Mind you, I was only 41 at the time.