Making Ice Cream - with Liquid Nitrogen

D

Dave KG

New member
Okay, if anyone decides to try this at home, I take no responsibility for it! :lol: But today in the lab, we made some more ice-cream with liquid nitrogen to cool... Worked really well, tasted great! :thumb:

So - first off we needed some liquid nitrogen. Basically this is just ait thats cooled to -200degC so it turns into a liquid (air is something like 80% nitrogen), so nothing toxic!:



Now, we took 1pt of milk, 1pt of doublecream and a punnet of strawberries and blackberries, added into a metal pan:



This was blended quickly with the food blender:



Now the fun bit - time to freeze the ice-cream. Liquid nitrgen was added to the pan with hte blender on - small amounts in stages so as not to form a big ice block:





after five minutes the mixture was starten to thicken and get cold:



But still more nitrogen was added in small amounts...





It was getting there now:



After about twenty minutes of slowly adding around a litre and a half of liquid nitrogen the ice-cream was ready:



Et voila...

 
My family does this also. I really need to know what a punnet translates to on this side of the pond though.:cool: I get bonnet and boot but haven't heard punnet.
 
GearHead_1 said:
My family does this also. I really need to know what a punnet translates to on this side of the pond though.:cool: I get bonnet and boot but haven't heard punnet.
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You are kidding right...
Do many people in your neighborhood keep liquid nitrogen lying around???

If so I'm glad I live here in NY :lol:

"J"
 
jaybs95 said:
You are kidding right...
Do many people in your neighborhood keep liquid nitrogen lying around???

If so I'm glad I live here in NY :lol:

"J"
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No but years ago I was a Chem Student. Some of my friends actually went on a did something with it. I get it from them.
 
GearHead_1 said:
My family does this also. I really need to know what a punnet translates to on this side of the pond though.:cool: I get bonnet and boot but haven't heard punnet.
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Punnet is just the small plastic tub that strawberries are sold in over here - there's about 300g of strawberries in the punnet I used, it was a small one. :)
 
Surfer said:
oh my god that looks so creamy and yummy, how does it taste? May have to do this :cool:
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Tasted great! :) Only thing you have to watch for is heavy metals in the nitrogen dewar, as they will be toxic. But the nitrogen itself is non-toxic, air is something like 75-80% nitrogen.
 
My guess is that a liter and a half of liquid N2 would cost significantly more than a quart of ice cream... but that's just my analytical side coming out :bubba

Looks like a lot of fun though :)
 
kaos said:
My guess is that a liter and a half of liquid N2 would cost significantly more than a quart of ice cream... but that's just my analytical side coming out :bubba

Looks like a lot of fun though :)
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Other than an educational institution or lab, where would one even GET liquid N2?
 
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