AG with a limited boil size? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > AG with a limited boil size?

Thread Tools
Old 10-15-2008, 08:24 PM   #1
Sep 2008
Manchester, United Kingdom
Posts: 70

I am contemplating having a go at my first AG brew. It will be definately very rough around the edges, but I'd like to try it anyway!

I only have a 19 quart boil pan at the moment though (I do also have an 11 quart one too). I can get my oven to maintain a temperature of about 152F so my thoughts are to mash at this temperature in the smaller pan, with about 1.1 quarts per pound of grain. Then sparge with 1.5 quarts per pound, which would make with a typical 10lb grain haul a total volume of liquid of 26 quarts.

Is there anything stopping me from boiling about 16 quarts of this and using it for the hops etc. and just pouring the left over wort which I couldn't boil into the fermenter afterwards (assuming the volume is correct)? Or is it critical that the wort is actually boiled?

I guess the alternative is to boil the two pots together, but I only have one powerful gas ring, the other isn't as good and I think I might be struggling for space on the hob anyway with the main pot there.

Any thoughts are appreciated.

Reply With Quote
Old 10-15-2008, 08:28 PM   #2
Parker36's Avatar
Sep 2007
Posts: 4,742
Liked 22 Times on 20 Posts

Maybe you should just do smaller batches? Have you done a partial mash yet?

Reply With Quote
Old 10-15-2008, 08:37 PM   #3
Here's Lookin' Atcha!
TexLaw's Avatar
Sep 2007
Houston, Texas
Posts: 3,670
Liked 28 Times on 26 Posts

For all-grain brewing, you really need to boil the entire volume of wort to get a proper protein break. You can get away with adding extract late, but AG wort.

Beer is good for anything from hot dogs to heartache.

Drinking Frog Brewery, est. 1993

Reply With Quote
Old 10-16-2008, 05:08 PM   #4
Oct 2008
Ann Arbor, Michigan
Posts: 93

Yes, boiling the wort down is essential to AG brewing. It not only brings your OG down to its proper mark but it kills a lot of nasties that could potentially make it into your fermenter causing the beer to just be plain crap. If you are going to do it this way I suggest boiling down in increments, do NOT just top off your fermenter with the unboiled wort.
Primary 1: Air
Primary 2: American IPA
Primary 3: Air
Primary 4: Air
Bottled: I rarely bottle.
Kegged: IPA, Dry Stout, Red Rye PA
Drinking: IPA, Every beer in the Bell's repertoire. Every Michigan-made beer. It isn't the Great Beer State for nothing.
"Roll out the barrel, we'll have a barrel of fun, we'll drink on the barrel, until the barrels' done, and when the barrels' done, we'll roll another one, and we'll drink, drink, drink, until the night is done" - Keg Season Song

Reply With Quote
Old 10-16-2008, 05:11 PM   #5
Post Hoc Ergo Propter Hoc
Revvy's Avatar
Dec 2007
"Detroitish" Michigan
Posts: 40,926
Liked 3201 Times on 1889 Posts

I know a couple brewers who do split pot AG boils, but I have never done it myself. But you can do small batch AG. I do it on my stove, and make 2.5 gallon test batches all the time. Depending on your boiloff, you need between 3 and 3.5 gallons preboil.

I use a 5 gallon pot for that.
Like my snazzy new avatar? Get Sons of Zymurgy swag, here, and brew with the best.

Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman

I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew

Reply With Quote
Old 10-16-2008, 05:18 PM   #6
WBC's Avatar
Jun 2007
La Puente, CA, California
Posts: 2,164
Liked 8 Times on 8 Posts

Just get the proper equipment and avoid failures due to equipment. Yes you can do it with smaller pots but you will have to make smaller batches.

Fermentor 1: Bill's House Ale II, Fermentor 2: German Helles, Fermentor 3: Bill's Schworzbier (Black Bier)
Tap 1: Bill's House Ale II, Tap 2: German Hefewizen, Tap 3: Nut Brown Ale
Future Brews: Stone IPA Clone, Blonde Ale, Budvar Clone, Newcastle Clone
New toy: Blichmann 27 gallon fermentor

“If you find yourself in a hole, the first thing to do is stop digging”

“Good judgment comes from experience, and a lotta that comes from bad judgment”

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
boil size Rhyno79 Beginners Beer Brewing Forum 3 02-12-2008 07:55 PM
Boil size PearlJamNoCode Beginners Beer Brewing Forum 5 11-20-2007 05:59 PM
Boil Size jaa2m General Techniques 14 11-20-2007 01:50 AM
Boil size Cos Extract Brewing 13 09-16-2007 01:41 PM
boil size? scottmc Extract Brewing 4 11-05-2006 03:40 PM

Forum Jump