Kegconnection Complete Starter Kit and More Giveaway!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Cold weather AG

Reply
 
LinkBack Thread Tools
Old 11-19-2006, 06:19 PM   #1
UNOmar
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2006
Location: Omaha, NE
Posts: 108
Default Cold weather AG

Question for the masses:
It's currently 39 degrees here in Omaha and I'm attempting an AG porter. My cooler seems to be failing at maintaining a temp. I hit 152 dead on, then 5 mins later it dropped to 149. So I heated up a half gallon to about 190 and dumped it in, right back to 152. Now it's been about 25 minutes and I'm down to 147. Do I keep adding hot water? What's the recommendation?
Thanks for any help.

__________________
UNOmar
UNOmar is offline
 
Reply With Quote Quick reply to this message
Old 11-19-2006, 06:45 PM   #2
Yuri_Rage
Gritty.
HBT_MODERATOR.png
Feedback Score: 0 reviews
 
Yuri_Rage's Avatar
Recipes 
 
Join Date: Jul 2006
Location: Southwest
Posts: 13,897
Liked 603 Times on 373 Posts
Likes Given: 54

Default

Start recirculating to maintain the temperature. This is best done with a HERMS/RIMS system and a pump, but you can do it manually. Drain a bit of your wort out of the mash, heat it, and distribute it back over the top of the mash. When doing this, avoid heating the drained wort above 160, as you don't want to damage the enzymes that are working for you. It'll be a fairly constant process since your temps are dropping so quickly.

You may be able to pull a decoction to get the same effect, but I have no experience decocting. I haven't heard of pulling a decoction to maintain temps, only to raise them. Maybe a more experienced AG-er could shed some light on that...

__________________
Homebrewed Blog..........YouTube Channel .......... Shirts, posters, etc
Yuri_Rage is offline
 
Reply With Quote Quick reply to this message
Old 11-19-2006, 09:29 PM   #3
boo boo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2005
Location: Hearts's Delight, Newfoundland
Posts: 4,171
Liked 30 Times on 26 Posts
Likes Given: 4

Default

If it were me, I would have brought my mash inside where the ambient tempertures were higher and where your temperture loss would have been lower.

I know this advise is too late for today but it might help for the next time.
Also you could have insulated the mash tun with a blanket, including the cover.

__________________

How do you BBQ an elephant....first you get your elephant....

boo boo is offline
 
Reply With Quote Quick reply to this message
Old 11-19-2006, 10:20 PM   #4
UNOmar
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2006
Location: Omaha, NE
Posts: 108
Default

Well, the brew session has completed. I think next time I brew I will take boo boo's advice and bring the mash tun inside. It's just a pain to transport everything...especially with 5 gallons of liquid inside.
I only missed my OG by 2 points so I think I'm allright. Thanks for the responses.

__________________
UNOmar
UNOmar is offline
 
Reply With Quote Quick reply to this message
Old 11-19-2006, 11:28 PM   #5
Bernie Brewer
Grouchy Old Fart
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Bernie Brewer's Avatar
Recipes 
 
Join Date: Feb 2006
Location: Eldorado, WI
Posts: 7,539
Liked 109 Times on 50 Posts
Likes Given: 2

Default

Quote:
Originally Posted by boo boo
If it were me, I would have brought my mash inside where the ambient tempertures were higher and where your temperture loss would have been lower.

I know this advise is too late for today but it might help for the next time.
Also you could have insulated the mash tun with a blanket, including the cover.
That's not necessary. I brew in a lot colder than that with no problems. If you'd rather not lug your tun around (they can get a bit heavy when full) throw an old blanket around it for extra insulation when the air temp drops.
__________________
I like to squeeze the nickle until the buffalo craps-mt rob

"Why don't we get drunk and screw?" Jimmy Buffett
Bernie Brewer is offline
 
Reply With Quote Quick reply to this message
Old 11-20-2006, 01:30 AM   #6
Reverend JC
2500 gallons year to date
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Reverend JC's Avatar
Recipes 
 
Join Date: Jun 2006
Location: Your Mom's
Posts: 1,883
Liked 1 Times on 1 Posts

Default

UNOmar, i just brewed my first AG last night in lincoln, same temps, I was using a keggle for my mash tun and just wrapped an old blanket around it and it held the temp right on (152) for 45 min.

Old blankets are the way to go.

__________________

"Just because i don't care dosen't mean I don't understand." -Homer Simpson


http://www.modernmonks.com

Reverend JC is offline
 
Reply With Quote Quick reply to this message
Old 11-20-2006, 01:51 AM   #7
flubdubman
Feedback Score: 0 reviews
 
flubdubman's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Guam (where there are NO homebrew shops!)
Posts: 36
Default

Just another suggestion for the next batch... As already mentioned, the old blanket will help, but also, why not overshoot your strike water by 10 or 15 degrees (BEFORE PUTTING IN THE GRAIN) and let it sit in the cooler to warm it up a bit. You should get the bulk of your temp. drop in the beginning then it will (theoretically) calm down a bit after the cooler is good and warmed up. If you overshoot too much, you can just leave the cooler open a little longer and stir the water a bit to bring the strike water down to your calculated temp before adding the grain.

__________________
Happiness is a CHOICE!
Primary:Just a future dream
Secondary:See above
Conditioning:Sigh...
Drinking:I'm ashamed to tell
www.shinytop.com
flubdubman is offline
 
Reply With Quote Quick reply to this message
Old 11-20-2006, 02:09 AM   #8
UNOmar
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2006
Location: Omaha, NE
Posts: 108
Default

Quote:
Originally Posted by Reverend JC
UNOmar, i just brewed my first AG last night in lincoln, same temps, I was using a keggle for my mash tun and just wrapped an old blanket around it and it held the temp right on (152) for 45 min.

Old blankets are the way to go.
Well I'll have to try that next time. How did your first AG brew session go?
__________________
UNOmar
UNOmar is offline
 
Reply With Quote Quick reply to this message
Old 11-20-2006, 03:33 AM   #9
Reverend JC
2500 gallons year to date
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Reverend JC's Avatar
Recipes 
 
Join Date: Jun 2006
Location: Your Mom's
Posts: 1,883
Liked 1 Times on 1 Posts

Default

It was great!

I missed the OG by .04

Most of that i attribute to the fact that i miscalculated the amount of sparge water needed, and i used 174 degree water, I am thinking had i used water that was 190 ish it would have brought the grain bed closer to 170 and thus getting me better efficiency.

But with an OG of 1.051 it should still have a good ABV when done.


P.S. Anyone reading this that has not built themselves a Counter Flow Chiller needs to put the keyboard down, take 80 bucks, and build it. That was the single most impressive tool of the night. 5 gallons of boiling brew down to 60 in 5 min. that deserves this

__________________

"Just because i don't care dosen't mean I don't understand." -Homer Simpson


http://www.modernmonks.com

Reverend JC is offline
 
Reply With Quote Quick reply to this message
Old 11-21-2006, 10:17 PM   #10
UNOmar
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2006
Location: Omaha, NE
Posts: 108
Default

Glad to hear all went well.

I'm still using my immersion chiller which this time of year works quite well. 212 down to 80 in 10 mins. I don't have a spigot on my brew pot yet so I'll be using it for a little while longer...

__________________
UNOmar
UNOmar 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
mashing in cold weather killian All Grain & Partial Mash Brewing 8 01-03-2011 02:44 AM
Brewing in Cold Weather permo General Techniques 13 10-20-2009 10:32 PM
Brewing outside in cold weather hopsoda General Techniques 4 01-21-2009 06:49 PM
Cold weather + boil off = ??? Joetuo All Grain & Partial Mash Brewing 17 10-29-2008 10:24 PM
Cold weather yeast Catfish General Techniques 4 12-08-2005 11:10 PM