How did this Slushpuppy-like substance form on my ice cubes?

I poured some 0.1 degrees celcius energy drink onto my ice cubes and on top of the ice cubes a slushpuppy-like substance formed. Is this just delicious instantly frozen energy drink? Could it kill me?

Also, if you have the time: raise your hand if you think the three words “How”, “did” and “form” added anything to this question.