On Tue, 24 Mar 2009 12:53:37 -0400, Kenneth
> wrote:

>On Tue, 24 Mar 2009 15:49:45 GMT, "ViLco"
> wrote:
>
>>It's part CO2 and part nitrogen, and there's been a lot of improvement from
>>the first CO2 only models. CO2 changed the flavor of beer while nitrogen
>>didn't but nitrogen had other issues, so they had to finetune the
>>balancement between CO2 and nitrogen.
>>--
>
>Hmm...
>
>There is already CO2 in the beer.
>
>So, in what sense might adding CO2 change the flavor?
>
>Thanks,

Hi again,

I just looked at
http://recipes.howstuffworks.com/question446.htm

and they say, in part:


"Because a beer like Guinness contains less dissolved CO2,
if you poured it from a can with no widget, the head not be
very thick because most of the CO2 would stay dissolved.

The purpose of the widget is to release the CO2 from some of
the beer in the can to create the head. The widget is a
plastic, nitrogen-filled sphere with a tiny hole in it. The
sphere is added to the can before the can is sealed. It
floats in the beer, with the hole just slightly below the
surface of the beer."


All the best,
--
Kenneth

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