Coldbreak Brewing Giveaway - Winners Drawn!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Brew in a bag, overnight mash for high efficiency
Reply
 
Thread Tools
Old 01-23-2013, 04:42 PM   #1
badducky
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: San Antonio, TX
Posts: 128
Liked 5 Times on 5 Posts
Likes Given: 3

Default Brew in a bag, overnight mash for high efficiency

I am sure this has been mentioned before, but it merits repeating. Brew-in-a-bag done with an overnight mash - in my case, a 3 gallon batch of small batch - gets consistently huge efficiency. Today was a real surprise. I aimed for 1.062 and ended with 1.078.

I am hoping to get better at prediction as I do it more, but I keep getting thrown by higher and higher efficiency.

At what percentage efficiency can I expect to top out?


badducky is offline
HBngNOK Likes This 
Reply With Quote
Old 01-23-2013, 05:31 PM   #2
HBngNOK
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
HBngNOK's Avatar
Recipes 
 
Join Date: Oct 2011
Location: Harrah, OK
Posts: 385
Liked 84 Times on 51 Posts
Likes Given: 49

Default

BIAB w/overnight mashing, no-chill cooling, etc. BIAB is so simple a cave-man can do it!


HBngNOK is offline
 
Reply With Quote
Old 01-23-2013, 05:34 PM   #3
kike_gimenez
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: Valencia, Venezuela
Posts: 52
Default

To what temp was ur Bag at first at ?

Cheers!
kike_gimenez is offline
 
Reply With Quote
Old 01-23-2013, 06:04 PM   #4
acidrain
Feedback Score: 3 reviews
Recipes 
 
Join Date: Jul 2012
Location: Seattle, Washington
Posts: 1,903
Liked 158 Times on 137 Posts
Likes Given: 32

Default

Huge efficiency is not a number... what do you call huge (actual brew house efficiency)?
__________________
Keg #1: Brown Bomber Bourbon/Oak Vanilla Porter
Keg #2: The Bollocks ESB
Keg #3 Lawnmower APA
Fermenter: Empty
Bottled: Mjolnir Mead, Lazy Daze Hefe.
acidrain is offline
 
Reply With Quote
Old 01-23-2013, 06:22 PM   #5
badducky
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: San Antonio, TX
Posts: 128
Liked 5 Times on 5 Posts
Likes Given: 3

Default

My actual efficiency was around 86% and my temp was 156 to start, placed into a per-heated oven at 170 (my lowest).

Every batch gets more efficient, too. The first time was something like 60%. I'm on my seventh batch, now, and it keeps getting higher. I'm not actually trying to make high abv beer, so I'm curious where I'll predict my upper limit.
badducky is offline
 
Reply With Quote
Old 01-23-2013, 06:30 PM   #6
gizmodog51
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2012
Location: deland, florida
Posts: 240
Liked 12 Times on 9 Posts
Likes Given: 1

Default

Quote:
Originally Posted by badducky View Post
My actual efficiency was around 86% and my temp was 156 to start, placed into a per-heated oven at 170 (my lowest).

Every batch gets more efficient, too. The first time was something like 60%. I'm on my seventh batch, now, and it keeps getting higher. I'm not actually trying to make high abv beer, so I'm curious where I'll predict my upper limit.
let me get this straight...you just drop the bag in mash water preheated to arrive at whatever mash temps you want, then shut up in an insulated enviroment stove, cooler or large styrene box for 8-12 hours? afterward drain bag and boil liquor as usual?

GD
gizmodog51 is offline
 
Reply With Quote
Old 01-23-2013, 06:32 PM   #7
kike_gimenez
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: Valencia, Venezuela
Posts: 52
Default

Are you increasing the rest time also ?

From what I've read. Over extraction by high temps/oversoaking can cause unwanted properties in your batch, like haze for instance.

I might be wrong tho. Im just a newbie but I think Ive heard it of Dr Bamworth @ Brewing Networks podcast about hazes.

Anyways. Cheers. If your improving your efficiency with similar rest times then your improving your methods!
kike_gimenez is offline
 
Reply With Quote
Old 01-23-2013, 06:59 PM   #8
badducky
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2011
Location: San Antonio, TX
Posts: 128
Liked 5 Times on 5 Posts
Likes Given: 3

Default

That's the process, gd. I take it two or three degrees hotter than target to start just because of the long mash.

I haven't had haze problems with most batches, particularly lately as I've done this more.

The thing about the long mash is timing. I don't have unlimited time to brew, and it's easier for me to divide it up before an off morning to do some of the stuff at night after work. I wake up and get the rest done over breakfast and I'm...

Hey, speaking of which, I have to go back to work! Cheers!
badducky is offline
 
Reply With Quote
Old 01-23-2013, 08:24 PM   #9
dcp27
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: Medford, MA
Posts: 4,121
Liked 123 Times on 119 Posts
Likes Given: 3

Default

increased time really shouldn't show much change in efficiency unless you're getting poor enzymatic activity from poor crush/mix/pH, especially at the higher temp end. once conversion is done, more time wouldnt increase efficiency.

are you seeing an equal increase in your attenuation, cuz that is more time dependant?
dcp27 is online now
WoodlandBrew Likes This 
Reply With Quote
Old 01-23-2013, 08:36 PM   #10
deuce40
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2012
Location: Orlando, Florida
Posts: 200
Liked 9 Times on 8 Posts
Likes Given: 2

Default

I heard of people getting their beers a little bit drier with the overnight mash. It sounds like a good idea though seeing how easy brew in a bag is. I was doing it before I had a mash tun and I loved it. It would be great for my smaller batches.


deuce40 is offline
WoodlandBrew Likes This 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Such thing as too high brewhouse/mash efficiency? rp5brew General Techniques 17 11-29-2011 10:47 PM
High mash efficiency problem Skinner All Grain & Partial Mash Brewing 4 05-16-2011 02:38 PM
does anyone mash overnight ? kappclark All Grain & Partial Mash Brewing 3 08-16-2010 01:48 AM
Brew day, a new mash tun, and horrible efficiency.. Thor the Mighty All Grain & Partial Mash Brewing 4 02-10-2010 01:10 PM
Overnight Mash Enhoffer-Knopfe Beginners Beer Brewing Forum 13 08-29-2009 01:39 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS