1. Fill a
bottle halfway with vinegar.
2. Put the
bottle in the middle of a large pan. (You can then
put dirt around the bottle until only the neck is
showing, and that will become your
tablespoon of baking soda and put it in a piece of
tissue paper, roll it thin enough so it can fit
inside the bottle, then tie both ends with
baking soda packet into the bottle, but don't let
it touch the vinegar.