Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Mash Efficiency Less than 60%

Reply
 
LinkBack Thread Tools
Old 05-01-2011, 04:20 PM   #1
ackerman81
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Camas, WA
Posts: 12
Default Mash Efficiency Less than 60%

Summary
Using 14 Lbs of Grains 11 Maris and the rest specialty malts mashing for 60 Minutes and fly sparging(7.5 Gallons) for 40 minutes in a 10 gallon cylindrical cooler with a false bottom I get a gravity reading after a 90 minute boil with 5.5 Gallons remaining of 1.055. Promash says that I'm 58% Efficient. I took a gravity reading of the wort coming out of the cooler after I had sparged off 7.5 gallons and at 70 deg's it had a gravity of 1.026

Grains
--------
Grains were crushed well by the brew shop, and they have validated that the crush produces efficient mashes.

Water
--------
I have pretty much prefect water, similar to the profile of czech pilsen region, so I add 5.2 to my mash.

PH: I did not test the ph so I don't know.

Mash Process
--------
Strike water temp was 161 ish and my mash temp hit about 152 ish. I stirred at about 30 minutes in and sparged with 180 - 200 deg water. I know 200 is to hot(husk tannins) but I wanted to try and give the sugars the best possible rinse. The interesting thing is my mash temp never seemed to get about 150 during the sparge process.

Boiling, my boil is a slow simmer, I could increase and boil off more wort allowing me to sparge more wort in the first place getting a better effiency?

Gravity of the wort still coming out of the mash after pulling off 7.5 gallons was 1.026, this makes me think that I have good conversion, and the sugar is there, but It's not getting rinsed. Also If I had channeling, then those sugars would still be on the grains, and I wouldn't get such a high gravity reading of the wort at the end of the sparge.

Am I boiling to lightly and I just need to pull off more wort?
Getting frustrated because I don't want to base all my recipes for 55% eff and buy a bunch more grains.

Ryan

OG in the fermenter was 1.055

So I didn't take a gravity reading before I boiled, just when complete. I boiled for 90 minutes

__________________
ackerman81 is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:28 PM   #2
osagedr
Recovering from Sobriety
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
osagedr's Avatar
Recipes 
 
Join Date: Apr 2009
Location: Winnipeg, Manitoba
Posts: 2,479
Liked 96 Times on 80 Posts
Likes Given: 26

Default

More experienced folks than me will chime in I'm sure; how did your LHBS "validate" that their mill is set properly?

What was your target OG?

__________________

2012 Canadian Brewer of the Year
2013 Canadian Brewer of the Year

@evilgoatbrewing

osagedr is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:33 PM   #3
mrk305
Beer Dude in the Sunset
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
mrk305's Avatar
Recipes 
 
Join Date: May 2007
Location: Georgia
Posts: 1,719
Liked 11 Times on 11 Posts
Likes Given: 22

Default

Do you stir a lot when sparging? That is where you get the "best possible rinse".

__________________
Carport Brewery, Lilburn GA

Any advise offered after 10:00p.m. should be regarded as questionable
I can't brew until something is empty
mrk305 is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:33 PM   #4
ackerman81
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Camas, WA
Posts: 12
Default

So I talk to the guys at the shop and they have extreamly efficient mashes doing there brewing at home, and they use the same mill, so I made the inference that if the crush was poor no one using the mill would be able to get an efficent mash.

We'll 100% effiecent mash would be 1.094, thats an unrealistic target obviously, but I'd like to get 75% and that would make my target 1.071

__________________
ackerman81 is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:34 PM   #5
ackerman81
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Camas, WA
Posts: 12
Default

No I don't stir at all when sparging... thought that would mess the grain bed up? maybe the important part of the grain bed is the bottom 1/4 or so?

__________________
ackerman81 is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:34 PM   #6
Mknox4354
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2011
Location: Laurel, Maryland
Posts: 235
Liked 2 Times on 2 Posts

Default

I just brewed my first AG yesterday and had similar results I was looking for an O.G. Of 1.070 and only hit 1.055. So I'm curious what when wrong as well. My efficiency was obviously very poor so I must of done something incorrectly

__________________
Mknox4354 is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:35 PM   #7
ackerman81
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Camas, WA
Posts: 12
Default

Would I be better off doing some sort of batch sparge? Or is fly sparging have the best potential for getting the best rinse/effency?

__________________
ackerman81 is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:39 PM   #8
osagedr
Recovering from Sobriety
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
osagedr's Avatar
Recipes 
 
Join Date: Apr 2009
Location: Winnipeg, Manitoba
Posts: 2,479
Liked 96 Times on 80 Posts
Likes Given: 26

Default

Mash too thick? What is your water/grain ratio?

Perhaps a longer mash? Verify conversion before sparging?

__________________

2012 Canadian Brewer of the Year
2013 Canadian Brewer of the Year

@evilgoatbrewing

osagedr is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:42 PM   #9
ackerman81
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Camas, WA
Posts: 12
Default

so I had 14 pounds of grains and used about 5 gallons of water

__________________
ackerman81 is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2011, 04:43 PM   #10
ackerman81
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Camas, WA
Posts: 12
Default

the gravity reading at the end makes me think I have good conversion and the sugars are there... it's just a rinse problem

__________________
ackerman81 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 vs Brewhouse Efficiency exe Beginners Beer Brewing Forum 22 12-22-2011 06:09 PM
How to get mash efficiency up zickefoose Beginners Beer Brewing Forum 14 03-07-2011 12:09 AM
Mash Efficiency Varnish Beginners Beer Brewing Forum 1 08-10-2009 12:25 PM
Mash efficiency Burgia Beginners Beer Brewing Forum 2 06-23-2009 12:41 PM
Mash efficiency McCuckerson Beginners Beer Brewing Forum 1 10-30-2008 01:38 AM