Dry ice?

[amystours]

in my lab we make ice cream with liquid nitrogen. just mix up all the ingredients (milk whipping cream, half n half, sugar, vanilla, salt, and some eggs) put it in some small cups and pour in the liquid nitrogen. it sublimates and freezes the ice cream, just have to keep stirring it. it's pretty sweet, and can make homemade ice cream in like 2 mins.

Hmm...that sounds scary!! Ah, remember the days of making ice cream, with the old hand-cranked ice cream freezer?? I thought we were doing good when we got an electric one!!!