Jeff Potter did this at Barcamp Boston 2009 and it was pretty cool. Also tasty!

I got to try this last week at our company Halloween party and the ice cream that came out was pretty amazing (very creamy).

Also, it's really fun pouring liquid nitrogen into a bowl with a mixer and ice cream batter.

Having a scoop of liquid N was one of "Hundred Things to do before you die" items.

The book is from NewScientist. http://www.amazon.com/100-Things-Before-Plus-Afterwards/dp/1...

I think this is how they make those "dippin' dots" ice cream (which i love oh so much).

My guess would be that you would have to drizzle the (pretty watery) mixture into a pool of liquid N. I guess it would just burn off after a while and you'd have a nice treat.

Hmm... maybe I'll give it a try this weekend.

We did this at my elementary school when I was a kid! (My teacher's husband was some kind of a scientist who had access to liquid N)

It turns out LN2 is cheap and easy to get, but a Dewar flask costs around $400. I haven't been able to find a place to rent one.

Ask for a thermos instead of a Dewar Flask. They're the exact same technology, but the term 'Dewar Flask' implies a much higher grade.

Remember not to seal the thing airtight unless you're trying to build a bomb.

Video: http://www.youtube.com/watch?v=hKY0orWnYfQ

Liquid N is a little difficult to come by. I need a dry ice recipe...