Liquid Nitrogen Ice Cream (yummy!)

Discussion in 'After Hours Lounge (Off Topic)' started by DaveF, Aug 2, 2003.

  1. DaveF

    DaveF Moderator
    Moderator

    Joined:
    Mar 4, 2001
    Messages:
    18,252
    Likes Received:
    1,638
    Trophy Points:
    9,110
    Location:
    One Loudoun, Ashburn, VA
    Real Name:
    David Fischer
    Inspired by a recent Popular Science Article, I made my first batch of peppermint liquid-nitrogen (LNO) ice cream [​IMG]. Sweet, creamy, and rich -- I highly recommend it if you can get liquid-nitrogen.

    I went to the University today, to help a student doing similar research as I did, borrowed the dewar and brought home a gallon or two of liquid nitrogen.

    For the ice-cream base, I used a cookbook recipe intended for slow-freezing in a normal freezer (and not with an ice cream machine); it was the simplest and seemed well suited to my approach. But any recipe should work fine.

    I mixed up the ingredients: sweetened condensend milk, heavy cream, vanilla extract, crushed peppermint candies, eggs, and half-and-half. I poured the mixture into my pressure cooker pot. Armed with a wooden spatula, I stirred vigorously as my roommate slowly poured the LNO into the mixture. Per OSHA regulations [​IMG] I wore my ski gloves and had a box fan blowing to disperse the evaporated nitrogen gas.

    A couple times I capped the pressure cooker for a minute; I read that can expedite the freezing process. Doing that caused the surface of the mixture to freeze, but then I had to break it up and work it back into the mixture. Overall, the best success came with having the intermittently LNO poured slowly into the ice-cream base with constant stirring. The pouring was stop occaisionally to check the ice-cream.

    The whole process took about 90 minutes to decide on my recipe, mix, and freeze it. Using the same recipe, I could make the ice cream in about half an hour. My recipe produced about 3/4 gallon and used maybe two gallons of LNO.

    Yummy! [​IMG]
     
  2. Philip_G

    Philip_G Producer

    Joined:
    Nov 13, 2000
    Messages:
    5,030
    Likes Received:
    0
    Trophy Points:
    0
    I'll remember that next time I have a few extra quarts of liquid nitrogen [​IMG]
     
  3. Jagan Seshadri

    Jagan Seshadri Supporting Actor

    Joined:
    Nov 5, 2001
    Messages:
    528
    Likes Received:
    0
    Trophy Points:
    0
    DaveF, are you the ice cream man?

    HEY EVERYONE! IT'S THE ICE CREAM MAN!!!
    Me me me me me!! [​IMG]

    -JNS
     
  4. ThomasC

    ThomasC Lead Actor

    Joined:
    Dec 15, 2001
    Messages:
    6,526
    Likes Received:
    0
    Trophy Points:
    0
    If any of you that are reading this live around Columbus, Ohio, you can try some at the Ohio State Fair.
     
  5. SteveA

    SteveA Supporting Actor

    Joined:
    May 25, 2000
    Messages:
    700
    Likes Received:
    0
    Trophy Points:
    0
     
  6. Peter Kim

    Peter Kim Screenwriter

    Joined:
    Jun 18, 2001
    Messages:
    1,577
    Likes Received:
    0
    Trophy Points:
    0
    Not so much noxious (isn't our atmosphere primarily nitrogen?) as it is physically harmful - I'm guessing the supercooled molecules could damage, if not collapse your lungs if inhaled.

    But then, I'm not the chemical, beaker-flavored ice cream making superfreak like Dave. [​IMG]
     
  7. Philip_G

    Philip_G Producer

    Joined:
    Nov 13, 2000
    Messages:
    5,030
    Likes Received:
    0
    Trophy Points:
    0
    in gas form it shouldn't be that cold, should it? it would displace O2 though, I guess you could get hypoxic and pass out er something.
    I really do want to try this [​IMG]
     
  8. DaveF

    DaveF Moderator
    Moderator

    Joined:
    Mar 4, 2001
    Messages:
    18,252
    Likes Received:
    1,638
    Trophy Points:
    9,110
    Location:
    One Loudoun, Ashburn, VA
    Real Name:
    David Fischer
     
  9. Mike Voigt

    Mike Voigt Supporting Actor

    Joined:
    Sep 30, 1997
    Messages:
    799
    Likes Received:
    0
    Trophy Points:
    0
    As Dave said, it's because it can displace the O2 in the air. Not a good thing - and liquid nitrogen, uncontained, isn't great either. It'll usually evaporate slowly; add some sort of significant heating element, though...

    On the skin, the effect is similar to burning. It is sometimes used to remove unwanted growths - moles, small tumors - from the skin.

    And, yes, those vent hoods are handy! [​IMG]
     
  10. Dennis Nicholls

    Dennis Nicholls Lead Actor

    Joined:
    Oct 5, 1998
    Messages:
    8,990
    Likes Received:
    347
    Trophy Points:
    9,110
    Location:
    Boise, ID
    Real Name:
    Dennis
    Just be careful with the dewar, because if you drop it, you will have a case of dewar die.......:p)








    (Dennis ducks for cover after the terrible pun.)
     
  11. DaveF

    DaveF Moderator
    Moderator

    Joined:
    Mar 4, 2001
    Messages:
    18,252
    Likes Received:
    1,638
    Trophy Points:
    9,110
    Location:
    One Loudoun, Ashburn, VA
    Real Name:
    David Fischer
     
  12. Philip_G

    Philip_G Producer

    Joined:
    Nov 13, 2000
    Messages:
    5,030
    Likes Received:
    0
    Trophy Points:
    0
    my old man worked at bendix or somewhere assembling components for different instruments in like, the 60's. I remember him telling stories of freezing warts and moles off on his own with LNO.
     
  13. Dennis Nicholls

    Dennis Nicholls Lead Actor

    Joined:
    Oct 5, 1998
    Messages:
    8,990
    Likes Received:
    347
    Trophy Points:
    9,110
    Location:
    Boise, ID
    Real Name:
    Dennis
    Back when I was a physics undergrad, we used liquid nitrogen to freeze candy bars and then drop them. Nothing like fragments of Snickers bars so you could eat them more slowly.....

    Ever try the frozen goldfish routine? I read a long time ago that live goldfish dropped into liquid nitrogen would go into suspended animation. They supposedly would revive OK when dropped frozen into room temperature water.....
     
  14. Joseph Howard

    Joseph Howard Stunt Coordinator

    Joined:
    Sep 10, 1997
    Messages:
    227
    Likes Received:
    0
    Trophy Points:
    0
    Ah, the fun of liquid nitrogen freezing. I use the stuff all the time for class demonstrations when talking about heat/temperature & kinetic molecular theory. Plus, my wife (a chemist) makes liquid nitrogen ice cream during chemistry society functions and/or when local school kids come to the univeristy for a "science day."

    Dr. Joe
     
  15. wally

    wally Second Unit

    Joined:
    Feb 12, 2001
    Messages:
    473
    Likes Received:
    0
    Trophy Points:
    0
    How 'bout a new flavor;

    Diver Dave’s Blueberry Bend?



    All the alliteration fit to print...
     
  16. DaveF

    DaveF Moderator
    Moderator

    Joined:
    Mar 4, 2001
    Messages:
    18,252
    Likes Received:
    1,638
    Trophy Points:
    9,110
    Location:
    One Loudoun, Ashburn, VA
    Real Name:
    David Fischer
    I was wondering if I could get nitrogen narcosis making my ice cream ... [​IMG]

    I'm going to try it again in two weeks, when my sister and brother-in-law are visiting. Though it'll probably be chocolate, instead of blueberry.
     

Share This Page