Things You'll Need
Instructions
Open the package of Mentos carefully, without ripping the foil. Slightly crush each candy just enough so that the inner core is exposed. Place the candy back into the foil wrapper.
Prepare a rocket launcher, or a small stand that can support your bottle. Dig a hole in the ground or use a small box. You also can cut the top from a large bleach bottle, place rocks in the bottom and place your unopened Diet Coke and Mentos inside.
Set up your rocket. Unscrew the cap of the coke bottle and drop the crushed Mentos, still wrapped in foil, into the bottle. Insert a wine bottle cork. Do not shake the bottle. Turn it cork side down and rest it in the rocket launcher. Quickly step away.
Watch for a few seconds as the pressure builds, blows the cork and sends your diet coke rocket high into the air. Be prepared for the sticky mess.