where can you buy liquid nitrogen
anywhere that provides goods for commercial plumbers/pipe fitters/welders will (or **** well SHOULD) have liquid N2. Praxair comes to mind. I would think most would deal. The problem is storing the stuff. It typically requires a vacuum Dewar which can be expensive and dangerous in the wrong hands.
you might also be able to pull off the ice cream trick with dry ice, which can be stored for a day or two in a couple brown bags in a styrofoam container. Also avail at praxair.
but youre right about the container. probably tough/expensive to come by for the average person.
The texture difference between ice cream made by a high-end machine and LN2 are almost indistinguishable, and requires a bit of finesse to get it to turn out without chunks of frozen globs so depending on why you're using it you may wish to stick with the cheaper (over the long term) method. The restaurant I'm at uses a 40L insulation container, so each fill up costs around 150 dollars.
I was curious...I was interested in finding liquid N2 because I saw show on food network I believe (idk which one), and the chef was demonstrating the anti-griddle as well as several other freezing techniques...He made an "inside out" ice cream cone, where he poured liquid ice cream base into a piece of plastic, rolled like an ice cream cone, and then dipped it into liquid N2, then poured a second layer and repeated, and then added chocolate, and other toppings, and rolled the outside in crushed pieces of cone. It was cool looking. You could really build some cool layers, or do some interesting insertions using liquid N2 as an instant freezing catalyst. I would only need enough to fill a Bay Marie (sp?) setup...Another words...I'd be dipping the liquid ice cream base directly INTO the N2, not using it to churn icecream in! lol. I'm also in NY (dutchess county)
Since in most states it is illegal to ship gases through the mail. I would suggest looking in the local phone book for a gas distributor near where you live. Be extremely careful when you Dip because you can get serious burns.
Over 50 years in food service business 35 as Ex Chef. Specializing in Volume upscale Catering both on and off premise .(former Exec. Chef in the largest on premise caterer in US with 17 Million Dollars per year annual volume).
Well versed in all facets of Continental Cuisine...
Yea...I plan on wearing heavy duty layered gloves, and the mold sits into a dipping device, to keep my hands that much further away. I just thought you'd need a licence to buy N2 from a gas supplier. But if not. That pretty much answers my question! Thanks.
CCan I ask what you are using it for? I am interested!
Is this for a commercial kitchen, or a home kitchen? If it's commercial you can probably just get an N2 Tank delivered, they are not especially expensive. You will still need dewers if you plan on transporting it away from the tank.
Edit* Nevermind, I see you are a home cook.