Get your HBT Growlers, Shirts and Membership before the Rush!


Home Brew Forums > Home Brewing Beer > General Techniques > aeration technique?
Reply
 
LinkBack Thread Tools
Old 01-28-2006, 07:51 PM   #1
rflach1
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2005
Posts: 15
Default aeration technique?

i'm new to this wonderful hobby but i have become quickly addicted. my question is in regards to how everybody aerates the wort before pitching the yeast. so far i've tried to just shake the primary fermentor(not very easy with 5 gal of liquid in it) and i used my autosyphon to "pump" air into the wort. any opinions?

__________________
rflach1 is offline
 
Reply With Quote Quick reply to this message
Old 01-28-2006, 11:32 PM   #2
Kaiser
Feedback Score: 0 reviews
 
Kaiser's Avatar
Recipes 
 
Join Date: Nov 2005
Location: Pepperell, MA
Posts: 3,904
Liked 115 Times on 71 Posts
Likes Given: 4

Default

I use a porous SS stone (you should be able to get this system at your LHBS for $30) and an oxygen bottle from Lowes/HD to aerate my wort now.

before that I let the wort splash into the primary and topped off and chilled with cold store bought spring water. Some if the spring water you can get at the store is already oxygenated according to the label.

Any method that is forcing large amounts of unfiltered air through the wort bears the risk on getting an infection due to the spores and germs contained in the air.

Kai

Kaiser is offline
 
Reply With Quote Quick reply to this message
Old 01-28-2006, 11:58 PM   #3
El Pistolero
Feedback Score: 0 reviews
 
El Pistolero's Avatar
Recipes 
 
Join Date: May 2005
Location: Houston, Baja Oklahoma
Posts: 3,598
Liked 13 Times on 13 Posts
Likes Given: 3

Default

As Kai said, I also use O2 pumped thru a SS airstone. Other methods work, but for me this has yielded fast starts, vigorous fermentations, and good beer.

__________________

[/I] Up Next - Hobgoblin
After That - Czech Pilsner
Primary - Humboldt Hop Rod (4/24)
Primary - NOT Wheat AG SNCA (5/5)
Secondary -
Conditioning - SNCA Clone (3/3),

El Pistolero is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2006, 12:01 AM   #4
casebrew
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2005
Location: San Diego
Posts: 847
Liked 6 Times on 6 Posts

Default

Seems I read somewhere that aeriation is unneccessary? From some scientific tests of various methods and measuring lag times. But I just pinch the end of my transfer hose and squirt the wort into the fermenter, usually in two strerams. I figure if it's making piddling noises it's splashing. So far, no infections, 4 to 24 hour lag times, 8 batches of all grain.

__________________

So far, I've had more experience thinking than I've had brewing....you don't think they are mutually exclusive, do you?

72 batches so far,
48 wine, mostly Loquat, peach, plum, prickly pear
23 beers and ciders
1 sauerkraut
1 Tequila, from a prickly pear wine experiment that didn't work. I call it "Prickly Heat"

casebrew is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2006, 12:11 AM   #5
El Pistolero
Feedback Score: 0 reviews
 
El Pistolero's Avatar
Recipes 
 
Join Date: May 2005
Location: Houston, Baja Oklahoma
Posts: 3,598
Liked 13 Times on 13 Posts
Likes Given: 3

Default

Quote:
Originally Posted by casebrew
Seems I read somewhere that aeriation is unneccessary?
I've also heard that for dry yeast it isn't necessary, but I also figure it sure can't hurt.
__________________

[/I] Up Next - Hobgoblin
After That - Czech Pilsner
Primary - Humboldt Hop Rod (4/24)
Primary - NOT Wheat AG SNCA (5/5)
Secondary -
Conditioning - SNCA Clone (3/3),

El Pistolero is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2006, 02:35 AM   #6
rewster451
Feedback Score: 0 reviews
 
rewster451's Avatar
Recipes 
 
Join Date: Oct 2005
Location: columbia, MO
Posts: 497
Default

I always just let the siphon hose kind of splash as it pours, and I shake the carboy after putting on the airlock. So far, much success. I suppose an O2 stone coudn't hurt, but I'm happy.

__________________
Up next: Big Brew Off competition between me and Kaptain Karma as one team, and my two roommates as another--We'll be brewing Pale Ales with specifications on malts, hops, and total yeild to see who's version is better (and to end up with ten total gallons of great beer).
Also up soon: Belgian Dubbel
Primary: Grampa's Woodshed Apple Smoked Porter
Secondary: Zombiefoot California Common, Chocolate Strong Porter
Drinking: Seamus O'Drunkagan Irish Red, Humble Pie Imperial Stout, Capricorn IPA
rewster451 is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2006, 04:27 AM   #7
KopyKat
Feedback Score: 0 reviews
 
KopyKat's Avatar
Recipes 
 
Join Date: Dec 2005
Location: Round Rock Texas
Posts: 471
Liked 2 Times on 1 Posts

Default

I just tried a method that someone posted that was to sanitize a plastic gallon jug, put a half gallon of wort at a time and shake it really hard. I tried this and got a half a carboy of foam which I had to wait to settle before adding the bottled water I had.
Think I will do the oxygen stone next time.

__________________
Jerry Pritchett
KopyKat Brewery


Primary: Belgian Blonde (for cask)
Drinking: Robust Porter
Up Next: Christmas Ale, SNPA, Simcoe IPA

AustinZealots.com
Home of the Austin Zealot's Inquisition
KopyKat is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2006, 06:30 AM   #8
Kaiser
Feedback Score: 0 reviews
 
Kaiser's Avatar
Recipes 
 
Join Date: Nov 2005
Location: Pepperell, MA
Posts: 3,904
Liked 115 Times on 71 Posts
Likes Given: 4

Default

Quote:
Originally Posted by casebrew
Seems I read somewhere that aeriation is unneccessary?
It is, if you can pitch enough yeast such that significant growth is not necessary anymore. But since even professionals, who do pitch much larger ratios than most home brewers, aerate/oxygenate the wort, I believe it is better for your beer. You actually want to have some growth in the primary so the yeast can better adopt to the wort composition. And it needs to build up lipids to withstand the increasing alcohol levels. Ester production may also increase if there is not enough O2 present in the early stages.

It is not necessary for dry yeast since the yeast has been dried at high kraeusen. This means it is fully changed (lipids) with O2.

Others,
Yes there are lot's of techniques out there to aerate your wort. I used many of them too. But nothing is as easy, clean and reliable as O2 or filtered air. When I now siphon from the brew kettle into the carboy, I don't have to worry to splash sufficiently. I actually put the hose in the carboy and cover the opening with aluminum foil and just wait.

Kai
__________________
BrauKaiser.com - brewing science blog - Twitter - water and mash chemistry calculator
Kaiser is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2006, 06:44 PM   #9
skydiverbob
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2005
Posts: 4
Default

I have an attachment on my CFC that injects the O2 as it passes through to the fermenter, works great. Before I got it I used a SS stone and just gave it a shot in the fermenter.

__________________
skydiverbob is offline
 
Reply With Quote Quick reply to this message
Old 01-29-2006, 09:52 PM   #10
david_42
Feedback Score: 0 reviews
 
david_42's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Willamina & Oak Grove, Oregon, USA
Posts: 25,664
Liked 139 Times on 132 Posts

Default

The OBC had a lecture from some of the local yeast pros and they said O2 and a stone is best, air & stone about 1/3 as effective, and shaking/splashing about 1/6th. I use a pump, filter and stone and aerate for 15 minutes, even with dry yeast. For high gravity ales, I'll pump in more air at 2 hours and 4 hours, unless I pitched onto a cake. In that case, I'm cleaning up blowoff at 2 hours and 4 hours.

__________________

Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"

"I would like to die on Mars, just not on impact." Elon Musk

david_42 is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aeration technique for newbies... bferullo General Techniques 9 10-07-2009 08:42 PM
Aeration technique Adam's Apples General Techniques 26 03-12-2008 01:15 AM
I Had To Try This Technique Sometime! hialtitude General Techniques 15 10-04-2007 06:20 PM
Which aeration technique would you use? Turkeyfoot Jr. General Techniques 12 05-29-2007 11:17 PM
Aeration Technique captaineriv General Techniques 14 01-17-2006 09:10 PM



Newest Threads

New

LATEST SPONSOR DEALS