>> Friday, February 06, 2015
A plastic bottle
Cheap vegetable oil
Alka-seltzer (effervescent tablet)
3/4 fill it with cheap vegetable oil and top up with water.
DO NOT STIR OR SHAKE IT!
You need the elements to be separate to get the effect. If you shake it up it takes a while for them to separate again.
The final part is to add alka-seltzer.
I gave the girls a tablet each and they put it in quarter at a time.
The effect is, well, rather effective!
You could shine a torch through the bottom of the bottle for an additional touch.
(Don't put the bottle on a heat source, the plastic may melt)