Slashdot Mirror


Making Ice Cream With Liquid Nitrogen

JasonMaggini writes "Popular Science has an article on how to whip up a batch of ice cream in 30 seconds or so by using liquid nitrogen. Just the thing for those hot summer days. The article is by Theodore Gray, creator of the ultra-spiffy Periodic Table Table."

49 of 390 comments (clear)

  1. shoot... by LBArrettAnderson · · Score: 5, Funny

    and to think i just spent 30 minutes going to the store to get rock salt...

    1. Re:shoot... by mattyohe · · Score: 2, Funny

      This is why you should subscribe to slashdot, so you can look into the future.

      --
      - what is the definition of simultanagnosia?! I've been meaning to look it up!
  2. Now wait a second... by Anonymous Coward · · Score: 3, Funny

    Am I the only one who is worried about shrinkage?

    1. Re:Now wait a second... by Technician · · Score: 3, Funny

      Am I the only one who is worried about shrinkage?
      I would think shrinkage would be the least of your worries.

      --
      The truth shall set you free!
  3. Heretics! by supz · · Score: 5, Funny

    Liquid Nitrogen should be used for cooling heavily overclocked CPU's, and that is it!

    None of this ICE CREAM MAKING... makes it look like its for wussies.

    1. Re:Heretics! by gfody · · Score: 4, Funny

      you should be using ice cream to cool your cpu. much better thermal dissipation

      only newbies still use liquid nitrogen

      --

      bite my glorious golden ass.
    2. Re:Heretics! by QuackQuack · · Score: 2, Funny

      Bah! Nothing beats a tall glass of Liquid Nitrogen with a twist of lemon on a hot summer day.

      After I drink it, I cool my CPU by breathing on it. None of this heatsink crap!

      --
      By reading this sig, you agree to the terms of my sig license.
  4. daily recommended intake by AnimeEd · · Score: 5, Funny

    what's the daily recommended intake for liquid nitrogen?

    1. Re:daily recommended intake by MulluskO · · Score: 3, Funny

      Evil chemists are polluting our air with their careless use of nitrogen!

      --

      Too busy staying alive... ~ R.A.
  5. the opposite of other fun things by double_plus_ungod · · Score: 2, Funny

    i like setting off thermite reactions.

    playing with liquid nitrogen kind of evens things out.

    1. Re:the opposite of other fun things by Oliver+Wendell+Jones · · Score: 2, Funny

      I've posted this story before, but I never get tired of it...

      I used to work at a plant that recycled car batteries. We had a machine that that would crush the batteries and dump everything - plastic, sulfuric acid, lead - into a large vat for separation. The plastic would mostly float to the top and be scraped away, the sulfuric acid was drained off into barrels for filtering and recycling and the lead was then rinsed off and placed into a rotating kiln to dry it before being dumped into a huge furnace (dumping wet items into molten lead isn't a really brainy idea).

      So anyways, this meant that we had one big room (airplane hanger kind of big) that always had a layer of diluted sulfuric acid on the floor that was leaking from the vat or dripping from the lead as it was moved into the kiln. We also had huge supplies of all sorts of dangerous chemicals that were used to treat the molten lead and turn it into specific alloys (including Red Phosphorous, Sulfur, Potassium Nitrate, a wonderful alloy from Phizer that contained Calcium, Aluminum and Magnesium (made great Thermite powder!) and everybody's favorite reactive reagent - metallic sodium).

      One day one of the crazy guys who worked on the plant floor invited a couple of us pyro-maniacs from the lab out to see something funny. He opened a 50 gallon drum filled with chunks of sodium and used a knife to cut off a chunk about the size of his fist. We then walked over to the battery crusher room, made sure noone was in blast range and then he threw the sodium overhand right into the center of that giant puddle of dilute sulfuric acid.

      Sodium reacts with water and releases Hydrogen gas and heat. Hydrogen gas is highly flammable and since there is all that excess heat just laying around it tends to ignite and create an instantenous explosion. Sulfuric Acid is even more reactive than water so the reaction occurs even faster and with more heat, so it guarantees an instantaneous loud boom. It performed exactly as expected, and gallons of dilute sulfuric acid were thrown in all directions (now before anyone complains, this was a very safe plant where everyone wore flame retardent clothing, asbestos gloves, respirators, safety glasses, full headphone style hearing protection and hard hats with full face shields, there was no immediate danger to anyone nearby and there was noone nearby), plus there was the loudest explosion I've ever heard.

      One of my favorite memories of working at that place... Well that and the idiot who managed to get red phosphorous, sulfur and potassium nitrate dust all over his gloves and then tried to wipe the dust off on his shirt. He apparently didn't pay attention in chemistry class the day they discussed how 'strike-anywhere' match heads are made.

      --
      A computer once beat me at chess, but it was no match for me at kick boxing -- Emo Phillips
  6. Baked Alaska by pyro_peter_911 · · Score: 5, Funny

    If you substitute liquid oxygen for the liquid nitrogen you could be having baked alaska in 30 seconds.

    Peter

  7. There is another idea... by thanq · · Score: 3, Funny

    My older folks used to tell me about how poor people in Eastern Europe were after the WWII under Soviet occupation. Since some of them could not afford glasses or mugs, they would often put a teabag in their mouth and they would drink water warmed up in the sun.
    So now, I guess they can also enjoy ice cream by putting all the ingredients in their mouths and then pouring the liquid...... uhmm.... never mind...

    1. Re:There is another idea... by aug24 · · Score: 2, Funny
      I can personally vouch that dipping an orange segment in LN for thirty seconds and then attempting to eat it is not sensible. Not even on a hot day.

      I was young... I was foolish... I was in the lab...

      J.

      --
      You're only jealous cos the little penguins are talking to me.
  8. Re:w00t! by ShieldW0lf · · Score: 2, Funny

    Time for some Terminator Ice Cream!

    --
    -1 Uncomfortable Truth
  9. Re:Theodore Gray - Renaissance man by MoThugz · · Score: 1, Funny
    Study how he writes, very very closely. Would that everyone could write that well.


    Not close enough it seems :)
  10. Uhm by jabbadabbadoo · · Score: 4, Funny

    Do not try this at home. You might get fat.

    1. Re:Uhm by IICV · · Score: 4, Funny

      You do realize that this is Slashdot, right? Getting fat is not a problem, it's the general condition.

    2. Re:Uhm by jabbadabbadoo · · Score: 3, Funny

      But understanding irony seems to be a problem :-)

    3. Re:Uhm by Myco · · Score: 2, Funny

      Uh, yeah. You do understand that this is Slashdot, right?

  11. Re:LOX? by red+floyd · · Score: 5, Funny

    I doubt it. A buddy told me about the stuff they used to do at CalTech...

    DISCLAIMER: My buddy may have been shitting me...

    He said they used to freeze frogs in liquid N2 and throw them against the wall to shatter. Then they'd put it in the wastebasket, and get a kick out of the reaction the stink got from the next sucker to enter the room.

    One day, he said, a guy didn't have any N2, so he used LOX instead. It reacted with the volatiles in the frog and blew out the wall when they threw it.

    --
    The only reason we have the rights we have is that people just like us died to gain those rights. -- Cheerio Boy
  12. Another cooking idea from popular mechanics by Anonymous Coward · · Score: 5, Funny

    I can't wait till they publish the instructions on roasting a turkey using a fusion reactor.

  13. Extermination by conway · · Score: 2, Funny

    My dad works as a scientist in a lab, and has easy access to liquid nitrogen.
    Some time ago we had a family of mice decide to take up residence behind our bookcases. My dad decided to take the easy way out (vs. moving the bookcase) and bring some nitrogen to flush them out.
    After pouring 1/2 a thermos behind the bookcase, there was lots of smoke and commotion from behind the bookcase, but the next day the mice returned!
    I guess they didn't mind it too much -- it must have dissolved too quickly to do them any real damage :)

  14. Re:Sweet! by PaulBu · · Score: 2, Funny

    Yeah, reminds me of a story which happened in our cryoelectronics lab, back in Moscow State University (Russia). OK, some guys bought frozen dumplings ("pelmeni", for those who know... ;-) ), and were not sure if they will not thaw by the time they get home, so they just poured a liter or two of LN over. Well, the next thing we've heard about those was half a week (!) later when the dumplings finally thawed enought to be separated and cooked... (pre-microwave oven days ;-) )

    Paul B.

  15. Let's party! by djupedal · · Score: 2, Funny

    Get this guy, and that college professor that can cook a ham in 1.15 seconds and we are down!

  16. Where does one get liquid nitrogen? by mrsam · · Score: 5, Funny

    The obvious question that I have, immediately after reading this story, is how exactly an average Joe-sixpack goes about obtaining a sufficient quantity of liquid nitrogen?

    This whole thing sounds very interesting, but I don't think I can go into your average supermarket store and ask for some liquid nitrogen:

    "Hello, I'd like a loaf of bread, Cheerios, and a gallon of your best liquid nitrogen. And, uh, a few grams of plutonium. I need it for my flux capacitor."

  17. Re:Theodore Gray - Renaissance man by ashitaka · · Score: 2, Funny

    Which is grammatically correct. You do read English I assume?

    Phrased another way: "It would be just so cool if everyone could write like that Theodore dude."

    --
    If you don't want to repeat the past, stop living in it.
  18. Heh! I wonder if they... by mtec · · Score: 2, Funny

    used liquid nitrogen to keep the server from melting when this got posted...

    --
    Cake or Death? Cake Please!
  19. Cryogenic Barbeque by voidptr · · Score: 4, Funny

    Add that to the Liquid Oxygen Grill and you've got yourself one cool party. Main course, desert, and pyrotechnic entertainment all in one.

    --
    This .sig for unofficial government use only. Official use subject to $500 fine.
  20. Re:This is news? by nacturation · · Score: 2, Funny

    You missed a couple steps:

    1. Get cream
    2. Add liquid nitrogen, which freezes the cream then evaporates
    3. You've got ice cream.
    4. ???
    5. PROFIT!

    --
    Want to improve your Karma? Instead of "Post Anonymously", try the "Post Humously" option.
  21. Magic Screwdrivers by voidptr · · Score: 5, Funny

    1) Take cooler of LNO2
    2) Suspend an ice cube tray full of vodka in it.
    3) Add resulting alcohol cubes to a glass of OJ
    4) Profit!! (or something...)

    The alcohol won't freeze at temperatures designed to make normal ice, but the liquid nitrogen is cold enough to make the liquor freeze. No more worrying about the ice dilluting your drink, as it melts the drink becomes stronger.

    --
    This .sig for unofficial government use only. Official use subject to $500 fine.
  22. Not Impressed... by mythosaz · · Score: 3, Funny

    Show me the guy making liquid nitrogen from ice cream, and then we'll talk.

  23. Everything you need for summer cookouts by Beryllium+Sphere(tm) · · Score: 2, Funny

    Liquid nitrogen to make the ice cream, and liquid oxygen to start the barbeque :-)

  24. Re:Recipie from the lab by Ciderx · · Score: 2, Funny

    > she poured in the LN2 which filled the bowl with dense fog that poured out, over the counter, and down around our ankles, spreading out across the floor...

    Easy there, its starting to sound like an erotic story....

  25. Obligatory Homer Simpson Quote by detritus. · · Score: 4, Funny

    Homer: 30 Seconds? But I want it now!

  26. Re:This is news? by Anonymous Coward · · Score: 0, Funny

    You missed a couple steps:

    1. Get cream
    2. Add liquid nitrogen, which freezes the cream then evaporates
    3. You've got ice cream.
    4. ???
    5. PROFIT!
    6. ???
    7. PROFIT!
    8. ???
    9. PROFIT!
    10. ???
    11. PROFIT!
    12. ???
    13. PROFIT!
    14. ???
    15. PROFIT!
    16. ???
    17. PROFIT!
    18. ???
    19. PROFIT!
    20. ???
    21. PROFIT!

    Sorry, I had to...

  27. Wot? by commodoresloat · · Score: 3, Funny

    That Dippin' Dots site wanted to set a cookie.

    This is getting me hungry.

  28. goddamnit by thedbp · · Score: 2, Funny

    and i thought i was cool when i dropped a V8 engine into my Snoopy Sno Cone Maker! back to the drawing board ...

  29. Re:Gargling by The+Fink · · Score: 2, Funny
    Actually it was kinda cool
    Yes. Yes, I'm sure it was. Liquid nitrogen's damn cold, in fact...

  30. LOX works fine too by jridley · · Score: 2, Funny

    LOX is a good substitute, and you can do a lot more cool things with it.

    Contrary to popular belief, although you should treat it with respect, LOX does not instantly cause everything to become explosive. Someone at one of our LOX ice cream events once held a blowtorch on some ice cream; it just singed the outside a bit.

  31. Re:Start your grill by Cowculator · · Score: 4, Funny

    I don't know about you, but I like lOX best on bAGELS...

  32. Re:Recipie from the lab by lobsterGun · · Score: 2, Funny

    Aren't stories like this supposed to start: "Dear Penthouse Forum. I never thought this would happent to me but..." ...and end up a little spicier?

  33. Holy brain freeze... by ZorMonkey · · Score: 2, Funny

    Just dont eat it in 30 seconds too, thatd be bad news.

  34. Re:Good for crowds by sahonen · · Score: 2, Funny

    Get in a car wreck, heh... "Hey officer, I saw the whole thing, the car crashed, that stuff in the back spilled on him, and now he's over there...And there...And there..."

    --
    Make me a friend and I'll mod you up
  35. Re:LOX? by Tackhead · · Score: 4, Funny
    >> [ frog + LN2 = shatter. frog + LOX = boom ]
    > Frog bomb!

    Frogdor the Burninator!

  36. Re:For those who want more... by kin_korn_karn · · Score: 2, Funny

    yeah, I really want to read a link of things to do with liquid nitrogen posted by a guy called "HornyBastard77"

  37. liquid nitrogen, ice cream, frozen bananas by flowerbear · · Score: 2, Funny

    yes liquid nitrogen is great for freezing things, bananas, rose petals. warts, small furry animals(THIS IS A JOKE!) as an undergrad i was an assistant in the chemistry lab and was able to do a vast amount of "experimenting" with liquid nitrogen and sometimes with liquid He(you can freeze soap bulbes with it!) although it is somewhat expensive. of course sometimes the chemistry professor would ask about our monthly liquid nitrogen expenses and would explain at 77K it evaporates very quickly(;>>).
    after spending about nine years in college(better than working for a living) i paid a visit to my old chem professor and he mentioned to his then lab assistant that i was one of his best students but not to let me anywhere near his liquid nitrogen. i guess i was not a very good liar or a thief.

    flowerbear
    flowerbear@phreaker.net

    --
    flowerbear adrift on a sea of confusion since 1958 flowerbear@phreaker.net FORTRAN programers don't eat quiche!!
  38. Re:Showering by ikkonoishi · · Score: 2, Funny

    That sounds like the beginning of some sort of superhero origins story.

  39. Re:Showering by dargaud · · Score: 2, Funny
    > That sounds like the beginning of some sort of superhero origins story.

    Didn't work for me though... Or if it did, I must have been pretty dumb and weak before !

    --
    Non-Linux Penguins ?