home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky alt.beer:8045 rec.crafts.brewing:7929
- Newsgroups: alt.beer,rec.crafts.brewing
- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!eos!aio!news
- From: andy rogers <rogers@ial3.jsc.nasa.gov>
- Subject: Re: Black and Tan
- Message-ID: <1992Dec31.162032.13530@aio.jsc.nasa.gov>
- X-Xxdate: Thu, 31 Dec 92 16:10:45 GMT
- Sender: news@aio.jsc.nasa.gov (USENET News System)
- Organization: Lockheed Engineering
- X-Useragent: Nuntius v1.1.1d13
- References: <1992Dec30.232758.21626@Csli.Stanford.EDU>
- Date: Thu, 31 Dec 1992 16:20:32 GMT
- Lines: 62
-
- In article <1992Dec30.232758.21626@Csli.Stanford.EDU> Kyle Wohlmut,
- kyle@Csli.Stanford.EDU writes:
- >In article <1992Dec30.214233.2823@aio.jsc.nasa.gov> andy "loot first,
- >then burn" rogers <rogers@ial3.jsc.nasa.gov> writes:
- >
- >>i went home last night and did this. used a chilled bass and a room
- >>temperature guinness. the separation was pretty good initially, however, i
- let
- >>it sit still on the counter thinking the separation would improve, but it
- >>mixed. cool to watch.
- >>
- >>when i get the B&T in a pub, it stays separated well. i get to drink draught
- >>guinness chased by a bass.
- >>
- >>i bet it's the nitrogen.
- >
- >How many times can we go through this? It has nothing to do with any
- >mythical 'nitrogen' that may be present, it's the bubbles in the
- >just-poured draft Guinness that initially keep it afloat. That's why,
- >as a previous poster pointed out, a good barman can just pull the
- >Guinness *plop!* into the beer, no spoon or nothing, and create a
- >perfect one. You too can do this in the privacy of your own home if
- >you use a just-opened can of 'Pub Draught Guinness,' which has no
- >nitrogen in it BTW. In fact, don't even buy Guinness in bottles
- >anymore, there's just no reason! Draught cans are light-years beyond
- >any of the sludge that comes out of those bottles! End of story!
-
- according to a post by <matthews@ajsh.colorado.edu (Alex Matthews)>
- ca 8 Nov 91 00:02:38 GMT
- "
- Dr. Alan Forage, creator of the technology, was on hand to explain the
- mechanics of the new can. This is the way the system works: The 16.9 ounce
- can (containing 14.9 ounces of beer) is fitted with a small plastic device
- (Guinness calls it a "smoothifier") which sits in the bottom of the can. This
- device has a pocket or cavity which is open to the atmosphere via a pin hole
- in its top. The can is evacuated of oxygen and filled with beer. Prior to
- sealing the can, a dose of liquid nitrogen is added to the beer. The can is
- closed and as the liquid nitrogen warms a pressure is created. The pressure
- forces about 1% of the beer and nitrogen into the plastic cavity. When the
- can is opened, the pressure is released and the small amount of beer in the
- cavity is forced back through the pinhole quite violently. The agitation
- created by this "geyser" mixes the nitrogen with the beer in such a way as to
- reproduce the tap handle character. Open up the first empty can you have in
- order to see what the "smoothifier" looks like.
-
- Prior to serving, the beer must be chilled. Guinness suggests a two hour
- stint in a refrigerator, with a target serving temperature of 45-50 degrees
- (if opened while warm, the beer gushes with excess force).
- "
-
- so your can (which is not yet available in most areas, including my own) does
- have nitrogen in it. nyaaaa nyaaa nyaaaaa. :^)
-
- i do use a spoon and it still mixes over time. if i don't use a spoon, it
- mixes immediately.
-
- the secret to the wonderful head is the nitrogen or they wouldn't have used it
- in the 'Pub Draught Guinness', now would they?
-
- andy
- ("i don't recall ever looting")
- ----
-