Kegconnection Complete Starter Kit and More Giveaway!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Would longer mash time have increased my efficiency

Reply
 
LinkBack Thread Tools
Old 06-28-2009, 12:03 AM   #1
petep1980
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
petep1980's Avatar
Recipes 
 
Join Date: Nov 2008
Posts: 1,901
Liked 13 Times on 13 Posts
Likes Given: 1

Default Would longer mash time have increased my efficiency

I mashed in with a target temp on a APA today with 150°. After 75 minutes it was 148°. I ended up with a 62% efficiency (I know I know, it could be the size of the mill, other things). However, had I increased my mash to 90 minutes done anything for my efficiency, or has the law of diminishing returns royally kicked in by then?

__________________
petep1980 is offline
 
Reply With Quote Quick reply to this message
Old 06-28-2009, 12:09 AM   #2
Yooper
Ale's What Cures You!
HBT_ADMIN.png
Feedback Score: 0 reviews
 
Yooper's Avatar
Recipes 
 
Join Date: Jun 2006
Location: Upper Michigan
Posts: 60,355
Liked 4279 Times on 3118 Posts
Likes Given: 825

Default

In general, lower mash temperatures and longer mashes tend to be more fermentable and will give a thinner, drier result than a higher temp and shorter mash.

If you mash longer than it takes to convert, there will be no increase in efficiency, but the wort will be more fermentable. Are you doing any iodine starch conversion testing?

__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006
Yooper is offline
 
Reply With Quote Quick reply to this message
Old 06-28-2009, 12:41 AM   #3
petep1980
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
petep1980's Avatar
Recipes 
 
Join Date: Nov 2008
Posts: 1,901
Liked 13 Times on 13 Posts
Likes Given: 1

Default

I do not. I suppose I should.

__________________
petep1980 is offline
 
Reply With Quote Quick reply to this message
Old 06-28-2009, 01:30 AM   #4
Yooper
Ale's What Cures You!
HBT_ADMIN.png
Feedback Score: 0 reviews
 
Yooper's Avatar
Recipes 
 
Join Date: Jun 2006
Location: Upper Michigan
Posts: 60,355
Liked 4279 Times on 3118 Posts
Likes Given: 825

Default

Quote:
Originally Posted by petep1980 View Post
I do not. I suppose I should.
I don't any more, but I did for a few. I always had conversion by 40 minutes. Leaving it for 60 minutes is more of a safeguard, I think.

I don't recall all of the science, but a longer, thinner mash at a lower temperature favors a lighter bodied more fermentable beer. A shorter, thicker mash at a higher temperature gives you a more dextrinous, less fermentable wort.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006
Yooper is offline
 
Reply With Quote Quick reply to this message
Old 06-28-2009, 12:04 PM   #5
hopshead
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2006
Posts: 24
Default

I would say you mashed long enough to get a full starch conversion. The 62% efficiency makes me think your mill is not set close enough, or you are using water that is making the mash ph way out of range thereby making the efficiency low. Where are you milling your grains the LHBS or on your own mill? When I bought my own Barley Crusher my efficiency jumped from about 65% to 75% using factory settings.

__________________
hopshead is offline
 
Reply With Quote Quick reply to this message
Old 06-28-2009, 02:19 PM   #6
petep1980
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
petep1980's Avatar
Recipes 
 
Join Date: Nov 2008
Posts: 1,901
Liked 13 Times on 13 Posts
Likes Given: 1

Default

I got it at the LHBS.

__________________
petep1980 is offline
 
Reply With Quote Quick reply to this message
Old 06-28-2009, 02:46 PM   #7
bbrim
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2008
Location: Lincoln, Nebraska
Posts: 738
Liked 23 Times on 21 Posts
Likes Given: 2

Default

Sorry to Hijack the thread, but... If I let my mash sit for about 2 hours, plus or minus 15 minutes, would it hurt the beer. I mean is there any threat of it beginning to sour or anything? My mash tun holds temp really well. I'll be mashing at 1.5 qt/lbs, at 152 degrees. I want to go to my friends house for the US soccer match but i want to get a brew in and this is the only way I can think of that will permit me time for both. A thinner beer may actually be a very good thing in this case so I'm not worried about that.

__________________
bbrim is online now
 
Reply With Quote Quick reply to this message
Old 06-29-2009, 02:03 AM   #8
budbo
Beer is good
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
budbo's Avatar
Recipes 
 
Join Date: Feb 2006
Location: La Plata, MD
Posts: 2,247
Liked 6 Times on 4 Posts
Likes Given: 8

Default

I start heating my sparge water at about 45min which generally gives me a 75min mash, I have let a mash sit for 4 hours (had to leave one once) I didn't notice any difference in the final product.

__________________
budbo is offline
 
Reply With Quote Quick reply to this message
Old 06-29-2009, 02:36 AM   #9
ajf
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
ajf's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Long Island
Posts: 4,643
Liked 99 Times on 93 Posts
Likes Given: 39

Default

It could if you have a coarse crush, mash at low temperatures, have a thin mash, or use malts without much diastatic power.

-a.

__________________

There are only 10 types of people in this world. Those that understand binary, and those that don't.

ajf 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
Mash Efficiency, first time measured IXVolt All Grain & Partial Mash Brewing 3 06-29-2009 05:20 PM
Mash Time Helps Efficiency? friscobrewer All Grain & Partial Mash Brewing 4 06-24-2009 06:57 PM
3 Batch Sparges - increased efficiency gonzo brewer All Grain & Partial Mash Brewing 19 09-10-2008 08:54 PM
Increased Efficiency Sherpa FE All Grain & Partial Mash Brewing 6 04-01-2008 04:54 PM
Longer Sparge - Better efficiency sonvolt All Grain & Partial Mash Brewing 28 01-12-2007 04:39 PM