i volunteer to be a test subject when your experiment gets under way!

bob p

--
Why do you drive on the parkway and park on the driveway?
"David M. Taylor" <dmtaylo2@SPAM.charter.SUCKS.net> wrote in message
news:1060bqmfasmurd6@corp.supernews.com...[color=blue]
> "Karl S." <null_dev@earthlink.net> wrote in message
> news:pan.2004.03.22.06.32.52.734570@earthlink.net...[color=green]
> >
> > I thought they'd figured that out years ago? Something about the rising
> > bubbles in the middle of the glass creating an upward current in the[/color][/color]
beer[color=blue][color=green]
> > which then flows back down around the sides of the glass, carrying some
> > of the smaller bubbles down with it...?
> >
> > By the way, I've only seen that effect in Guinness. Is it something that
> > is only visible in stouts? I'm still newbie level here...[/color]
>
> I imagine this works for all nitrogenated beers such as Guinness and
> Caffrey's. The way I picture it is that as the bubbles break near the[/color]
top,[color=blue]
> the "unbubbled" beer needs someplace to go, and that is down. Then[/color]
because[color=blue]
> the N2 bubbles are smaller then regular CO2 bubbles, they are more tightly
> packed together, and are more easily pushed down when the beer falls.[/color]
This[color=blue]
> may also work in reverse, that is, as the bubbles form near the bottom of
> the glass and begin to rise, the N2 bubbles are packed so tightly together
> that they carry some beer along with them toward the top of the glass.
> That, at least, is my theory. Need more tests.
>
> --
> Dave
> "Just a drink, a little drink, and I'll be feeling GOOooOOooOOooD!" --
> Genesis, 1973-ish
>
>[/color]