*Ss Brewing Technologies Giveaway - Enter Now!*

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Efficiency question
Reply
 
LinkBack Thread Tools
Old 05-01-2012, 12:15 AM   #1
Deeznuttz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2011
Posts: 5
Liked 1 Times on 1 Posts

Default Efficiency question

Hey guys, I am consistently getting a high pre-boil and post boil gravity readings and I'm not sure why. I fly sparge in a keggle with a pump and gravity feed my sparge water out of a cooler. I brewed a kölsch this last weekend and wanted my OG to be around 1.040 and instead I hit a reading of 1.063. So I guess when fermentation is complete, I won't get down to around 1.010 where it's supposed to be instead, I'll have a kölsch that's around 7 ABV, not a very good session beer. So I guess what I'm trying to say is that am I getting really good efficiency or am I doing something wrong. Thanks.

__________________
Deeznuttz is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2012, 12:56 AM   #2
MizooBrew
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2011
Location: Missoula, MT
Posts: 82
Likes Given: 1

Default

What I would suggest is that you check the calibration of your instruments, specifically your thermometer that you are measuring your mash temps with. This would seem to be the most obvious source of this overly-high OG. It could also be that your hydrometer is improperly calibrated. Check it with distilled water to make sure it reads 1.000 at 60F. If your instruments are calibrated and your recipe calculations are in fact correct, then you are getting crazy efficiency. Have you calculated what it would be if this were the case?

__________________
MizooBrew is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2012, 03:39 AM   #3
Deeznuttz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2011
Posts: 5
Liked 1 Times on 1 Posts

Default

Hey just finished checking my refractometer and my digital thermometer, ( which I put into a glass of ice water and read 32 degrees) both seem to be calibrated correctly. I use Beersmith do you think maybe I'm screwing something up when plugging in numbers?

__________________
Deeznuttz is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2012, 04:02 AM   #4
MizooBrew
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2011
Location: Missoula, MT
Posts: 82
Likes Given: 1

Default

I'm not really a BeerSmith wiz, but from my limited use of it that seems possible. Make sure you have your equipment profile set up to match what your equipment actually is. That is about all I can think of. Do you take temp readings at the beginning and end of your mash, or only at the beginning? The reason I ask is because sometimes when I mash if I take a reading only at the beginning things can seem to be at the right temp, but are actually higher and if checked a few minutes later will show that it is over my mash temp (did that make any sense?).

You are checking your mash temps, not just going by what the strike water calc tells you you need, correct? And you are incorporating your mash temp into your BeerSmith calculations?

__________________
MizooBrew is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2012, 04:05 AM   #5
phoenixs4r
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Location: Hayward, California
Posts: 1,506
Liked 54 Times on 49 Posts
Likes Given: 38

Default

Totally opposite most all grain brewers experience, lol. Add less base malt, set your efficiency higher in beersmith to help lower the numbers and get dialed in.

phoenixs4r is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2012, 11:21 AM   #6
indianaroller
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2008
Posts: 195
Liked 4 Times on 4 Posts

Default

What efficiency % are you aiming for; what are you getting?

__________________
indianaroller is offline
 
Reply With Quote Quick reply to this message
Old 05-01-2012, 11:35 AM   #7
wailingguitar
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2011
Location: Florence, Alabama
Posts: 1,600
Liked 95 Times on 83 Posts
Likes Given: 432

Default

Recipe?

__________________

"Why did you.... what was the point of... how drunk were you when you decided this was a good idea?" - DMartin

wailingguitar is offline
 
Reply With Quote Quick reply to this message
Old 05-02-2012, 12:52 AM   #8
Deeznuttz
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2011
Posts: 5
Liked 1 Times on 1 Posts

Default

Here is the recipe. I seemed to have hit all of my mash temps, although I did have a couple of hotter spots in the mash which I thought was kinda weird. Anyways, if you guys see anything I did wrong, let me know.

Denny's Orange Kolsch
Kölsch
Type: All Grain Date: 4/17/2012
Batch Size (fermenter): 11.00 gal Brewer: Denny
Boil Size: 15.48 gal Asst Brewer:
Boil Time: 90 min Equipment: Stainless Kegs (10 Gal/37.8 L) - All Grain
End of Boil Volume 12.48 gal Brewhouse Efficiency: 72.00 %
Final Bottling Volume: 10.25 gal Est Mash Efficiency 78.5 %
Fermentation: Ale, Single Stage Taste Rating(out of 50): 30.0
Taste Notes:
Ingredients

Ingredients
Amt Name Type # %/IBU
16 lbs Pilsner (2 Row) Ger (4.5 SRM) Grain 1 78.0 %
3 lbs Wheat Malt, Ger (2.0 SRM) Grain 2 14.6 %
1 lbs 8.0 oz Wheat, Flaked (1.6 SRM) Grain 3 7.3 %
2.00 oz Hallertauer [4.80 %] - Boil 60.0 min Hop 4 16.7 IBUs
1.00 oz Hallertauer [4.80 %] - Boil 15.0 min Hop 5 4.2 IBUs
1.00 oz Coriander Seed (Boil 10.0 mins) Spice 6 -
0.75 oz Orange Peel, Bitter (Boil 10.0 mins) Spice 7 -
0.75 oz Orange Peel, Sweet (Boil 10.0 mins) Spice 8 -
Beer Profile

Est Original Gravity: 1.050 SG Measured Original Gravity: 1.063 SG
Est Final Gravity: 1.012 SG Measured Final Gravity: 1.010 SG
Estimated Alcohol by Vol: 5.0 % Actual Alcohol by Vol: 7.0 %
Bitterness: 20.9 IBUs Calories: 210.2 kcal/12oz
Est Color: 5.5 SRM
Mash Profile

Mash Name: Single Infusion, Medium Body, No Mash Out Total Grain Weight: 20 lbs 8.0 oz
Sparge Water: 11.53 gal Grain Temperature: 72.0 F
Sparge Temperature: 168.0 F Tun Temperature: 72.0 F
Adjust Temp for Equipment: TRUE Mash PH: 5.20
Mash Steps
Name Description Step Temperature Step Time
Mash In Add 7.41 gal of water at 165.0 F 152.0 F 60 min
Sparge Step: Fly sparge with 11.53 gal water at 168.0 F
Mash Notes: Simple single infusion mash for use with most modern well modified grains (about 95% of the time).
Carbonation and Storage

Carbonation Type: Keg Volumes of CO2: 2.3
Pressure/Weight: 12.54 PSI Carbonation Used: Keg with 12.54 PSI
Keg/Bottling Temperature: 45.0 F Age for: 30.00 days
Fermentation: Ale, Single Stage Storage Temperature: 65.0 F
Notes

Created with BeerSmith

__________________
Deeznuttz is offline
 
Reply With Quote Quick reply to this message
Old 05-02-2012, 12:58 AM   #9
duboman
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2011
Location: Glenview, IL
Posts: 6,162
Liked 475 Times on 441 Posts
Likes Given: 210

Default

I see this is Denny's recipe with a batch size of 11 gallons, did you brew an 11 gallon batch?

If not, did you scale the recipe down to your batch size?

If not, there's your answer

__________________
Nothing Left to do but smile and drink beer.....

The Commune Brewing Company-Perfecting the "art" of beer since 2010
duboman is online now
 
Reply With Quote Quick reply to this message
Old 05-02-2012, 01:52 AM   #10
henryred
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2011
Location: lima, oh
Posts: 61
Liked 1 Times on 1 Posts

Default

Recipe set at 78% eff
Actual eff is 92%
That is quite a big difference!!!
Did this happen more than once?
Did u buy the grain preceushed in a bag from lhbs?
Did u weigh some of the grain and your friend the rest?
Bathroom scale?

__________________
henryred is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools