[Avodah] Making Ice Cream on Shabbat

[Zev Sero]

Prof. Aryeh A. Frimer wrote:
> Has anyone seen a Halakhic discussion about making Ice cream on Shabbat. 
> There is something known as an ice Cream ball 
> [http://icecreamrevolution.com/; video: 
> http://www.youtube.com/watch?v=z4t3SWKYWCE&NR=1].  In one compartment 
> you add ice and rock salt; in the other you add sugar, cream, and 
> vanilla.  Then you shake for about 10 minutes and the mix freezes during 
> the agitation to give a pint of ice cream.

How do you distinguish this from megaben?

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Zev Sero                      The trouble with socialism is that you
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