Turning water into ice usually takes a lot of time. Not for this guy though, he magically turns liquid water into frozen ice. It's instantaneous! Seriously, just watch water get poured from the bottle and then freeze immediately. What kind of sorcery is this?
The trick is getting the water to just about freezing in the freezer. Grant Thompson, the mastermind behind the video, put an unopened bottle of water in the freezer for about an hour and a half to two hours to get the perfect temperature.
Then after the water is supercooled, he pours the almost freezing water over ice and watches it immediately transform into ice as it touches the ice cube. It's a fun little trick that'll blow your friends minds. [Grant Thompson via The Awesomer]