Aka Potassium Nitrate.
Yep as a kid I would get that at the local pharmacy and mix it 50/50 with sugar.
Light it…
I have stories
Mix it well with honey and you have a sticky smoke
Put enough sulfur in it to turn it a nice shade of yellow and put a cloud of smoke large and heavy enough to evacuate an entire HS football field during a game.
Or so I've heard of course...