All Grain - Aeration - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > All Grain - Aeration

Reply
 
Thread Tools
Old 11-15-2012, 05:32 PM   #1
mgortel
Recipes 
 
May 2010
Stewartstown, PA
Posts: 871
Liked 49 Times on 38 Posts



Is stirring of the wort prior to pitching yeast adequate to aerate the wort for All-Grain brewing or should I be using an aerator?

Thanks!
Mike
__________________
EVERYONE is entitled to my opinion!
Primary: None
Secondary: Chocolate milk Stout
Upcoming Brews: Dusseldorf Alt
Kegged: Biermuncher Centenniel Blonde

 
Reply With Quote
Old 11-15-2012, 05:37 PM   #2
WoodlandBrew
HBT_SUPPORTER.png
 
WoodlandBrew's Avatar
Recipes 
 
Oct 2012
Malden, MA
Posts: 2,191
Liked 244 Times on 199 Posts


You don't need an aerator. Shaking the fermenter for 40 seconds will saturate the wort with air. That's 8ppm oxygen. I've never made a beer that wasn't happy with that, but have heard some yeasts are finicky. If you want more than 8ppm you will need an oxegen tank.
__________________
The 2nd edition is now available: Brewing Engineering
Woodland Brewing Research Blog Applied Science for Better Beer.

 
Reply With Quote
Old 11-15-2012, 05:58 PM   #3
RM-MN
HBT_SUPPORTER.png
Recipes 
 
Nov 2010
Solway, MN
Posts: 9,451
Liked 1649 Times on 1308 Posts


It depends on the beer. Oxygen seems to be vital for yeast reproduction so unless you pitch lots of yeast, you'll want aeration to help get the proper population. For a 1.040 OG session beer, you might not need much aeration at all. When you make your imperial you need way more yeast so aeration is more critical.

 
Reply With Quote
Old 11-15-2012, 06:07 PM   #4
SteelString_Will
Recipes 
 
Nov 2012
Posts: 24
Liked 3 Times on 3 Posts


Also consider your end goal. If it is to make great beer for you to enjoy in your own home, I'd just shake it and enjoy in 3 weeks.

If you are trying to perfect yeast techniques / move into professional brewing it may be worth it to experiment with oxygenating the wort and testing different pitch rates.

It isn't necessary to make really fantastic beer, but it is another element of control to ensure consistency from batch to batch.

 
Reply With Quote
Old 11-15-2012, 06:20 PM   #5
Bricks41
Recipes 
 
Aug 2012
Dublin, OH
Posts: 241
Liked 19 Times on 15 Posts


I found a trick that works for me. When I transfer from the BK to the carboy, I siphon it through a small mesh strainer. The funnel also has a "filter" with smaller holes as well. Those two things combined with dropping it straight down into the middle of the carboy creates as good aeration as I think you can get without O2.

Example: I brewed a 1.072 beer Saturday and by the end of the transfer, I had to change what I was doing because the fluffy, foamy goodness was about to come out of the carboy. 4-5 inches of foam +/-

 
Reply With Quote
Old 11-15-2012, 06:29 PM   #6
45_70sharps
 
45_70sharps's Avatar
Recipes 
 
Sep 2012
Raymond, Washington
Posts: 1,807
Liked 172 Times on 141 Posts


Shaking is good, I have used a paint mixer in a drill and that does a better job.
That being said, no method will put oxygen into the wort near optimum levels anywhere near as well as just pumping O2 in there.
__________________
Let's see if I keep this updated!

On tap
Black Butte clone

In secondary
Pumpkin ale

In primary
Honey wit

Up next.. Firestone Union Jack clone

 
Reply With Quote
Old 11-15-2012, 06:33 PM   #7
Hopper5000
Recipes 
 
Oct 2011
Oakland, CA
Posts: 1,260
Liked 89 Times on 68 Posts


Ya for most beers shaking and using Bricks method are good enough. Usually when you start getting into bigger beers like 1070+ you might want to consider getting an aquarium pump and an oxygen stone or a straight up oxygen tank aerator. Oxygen is crucial in yeast reproduction which is especially important on larger beers. Some folks will dose it and then dose it again within 12 to 18 hours.

In essence, if you make small beers probably not an issue unless yo are getting a lot of underattenuation or something like that. Bigger beers, might want to consider it.

 
Reply With Quote
Old 11-15-2012, 06:45 PM   #8
Bricks41
Recipes 
 
Aug 2012
Dublin, OH
Posts: 241
Liked 19 Times on 15 Posts


Agreed Hopper... some sort of aeration system might be my next upgrade because I love huge beers.

Brewed a 1.108 RIS that (thankfully) fermented down, as of day 17, to 1.023 with this method. Estimated 1.022 FG. Of course the decanted gallon starter didn't hurt lol... WLP099 is a beast.

 
Reply With Quote
Old 11-15-2012, 07:31 PM   #9
daksin
HBT_SUPPORTER.png
 
daksin's Avatar
Recipes 
 
Aug 2011
San Diego, CA
Posts: 4,617
Liked 356 Times on 310 Posts


After fermentation temperature control and proper pitching rates, the next logical step in improving your beer is properly oxygenating. $60 is a small price to pay for that, I think. The places you'll see the most improvement are big beers and british beers (and other yeasts that love tons of oxygen like WLP090 and a few other hard flocculators), as well as reduced lag times and shorter, cleaner ferments all around. I highly recommend it.

If you don't have the first two down, though, work on those first for sure.
__________________
I can't be arsed to keep up this list of what's in the fermenters, but hey, check out the cool brewery I own!

twitter.com/2kidsbrewing .. facebook.com/2kidsbrewing .. 2kidsbrewing.com

 
Reply With Quote
Old 11-15-2012, 07:34 PM   #10
Hopper5000
Recipes 
 
Oct 2011
Oakland, CA
Posts: 1,260
Liked 89 Times on 68 Posts


Yeah the last few beers I have oxygenated with a stone literally took off within 4 hours...

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
First All Grain Batch, Found a Good Aeration Method eaglewwit All Grain & Partial Mash Brewing 2 01-30-2010 12:54 AM
No foam from all-grain aeration. viking999 General Techniques 9 05-21-2009 11:36 AM
Grain Steeping & Wort Aeration Q's KDM Beginners Beer Brewing Forum 12 01-30-2009 12:30 AM
Aeration of first All grain jaymack All Grain & Partial Mash Brewing 15 04-25-2008 03:08 AM
Aeration Chris_Dog DIY Projects 4 06-11-2007 10:24 PM


Forum Jump