How to make hot ice

[PHY]

This is amazing, see for yourself

[youtube]http://youtube.com/watch?v=aC-KOYQsIvU[/youtube]

For the record, it's not instant/hot ice. It's just a super-saturated solution that crystallizes when he touches it with a normal crystal. you'll see on his finger when he pokes it, theres a crystal. it starts the 'seed' to crystallize the rest of the solution.