There are many videos on YouTube that show water freezing almost instantaneously. This video is another example of this phenomenon happening.
How to do this
- Put a unopened bottle of plain water in the freezer and leave for around 2 hours.
- Once the time has passed gentley take out the bottle and carefully open it.
- Slowly pour it the water and watch instant ice form before your eyes.
You could also just bang the bottle to make the bottle freeze.