Partial mash and efficiency. - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Partial mash and efficiency.

Reply
 
Thread Tools
Old 07-27-2009, 04:35 AM   #1
FuelshopMcgee
 
FuelshopMcgee's Avatar
Recipes 
 
May 2009
Spangdahlem, Germany
Posts: 236
Liked 7 Times on 5 Posts



I know the way to check your efficiency is via hydrometer reading but how do you know what your efficiency is with a partial mash? I'm just curious as how to figure out what my target gravity after my mash is supposed to be because of my malt extract not being added yet I'm not going to be near my SG that is in beer tools.

 
Reply With Quote
Old 07-27-2009, 04:47 AM   #2
JMSetzler
 
JMSetzler's Avatar
Recipes 
 
Dec 2008
Hickory, North Carolina
Posts: 901
Liked 15 Times on 15 Posts


I don't know about Beer tools, but you can treat your mash like a separate beer. You would calculate the efficiency of the mash the same way you would in an all-grain beer. You would just calculate the potential of the mash and compare it with what you actually get to find that efficiency.
__________________
Beer Before Noon - My Beer and Homebrewing Adventures

Kamado Joe Cooking Channel - Grillin' up a Storm!

 
Reply With Quote
Old 07-27-2009, 02:06 PM   #3
FuelshopMcgee
 
FuelshopMcgee's Avatar
Recipes 
 
May 2009
Spangdahlem, Germany
Posts: 236
Liked 7 Times on 5 Posts


duh...now I feel dumb thanks for the help!

 
Reply With Quote
Old 07-27-2009, 02:34 PM   #4
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,335
Liked 1765 Times on 1122 Posts


BTP knows that malt extract additions are always worth 100% efficiency so the number it gives you is only based on malts that are mashed. However, if you wanted to know what your mash efficiency was prior to adding all the extract, measure the gravity and temporarily reduce your batch size down to the actual volume you got out of the mash and enter the gravity into the analysis tab in "OG".
__________________
Welcome to BrewHardware.com. I love you.
New Stirplates are IN!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.


 
Reply With Quote
Old 07-28-2009, 11:50 PM   #5
FuelshopMcgee
 
FuelshopMcgee's Avatar
Recipes 
 
May 2009
Spangdahlem, Germany
Posts: 236
Liked 7 Times on 5 Posts


well if the calculations are correct I hit damn near 80% today!?!! Feels good!

 
Reply With Quote
Old 07-28-2009, 11:58 PM   #6
SavageSteve
 
SavageSteve's Avatar
Recipes 
 
Sep 2007
Connecticut
Posts: 987
Liked 9 Times on 6 Posts


I use BTP, but I find this website much easier to use for determining efficiency:

Brewhouse Efficiency Calculator | Brewer's Friend

-Steve
__________________
On Deck: Jamil's Vanilla Robust Porter
Fermenting: Orange Blossom Mead
Kegs: Element 56 Pale Ale, Ron's Belgian Blonde, Summer'n Saison, Furloughktoberfest '09, Grateful Pale Ale, Sam Adams Cream Stout Clone, EdWort's Apfelwein
Planning: n/a

 
Reply With Quote
Old 07-29-2009, 03:35 PM   #7
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,335
Liked 1765 Times on 1122 Posts


I have to ask. You already have your grain bill in BTP so why wouldn't you just look at the "efficiency" field to know your efficiency?
__________________
Welcome to BrewHardware.com. I love you.
New Stirplates are IN!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Old 07-30-2009, 11:32 AM   #8
FuelshopMcgee
 
FuelshopMcgee's Avatar
Recipes 
 
May 2009
Spangdahlem, Germany
Posts: 236
Liked 7 Times on 5 Posts


Thats what I did...I started out using 70% and it did not match the hydrometer readings I was getting so I kept bumping it up until it matched.

 
Reply With Quote
Old 07-30-2009, 04:19 PM   #9
SavageSteve
 
SavageSteve's Avatar
Recipes 
 
Sep 2007
Connecticut
Posts: 987
Liked 9 Times on 6 Posts


Quote:
Originally Posted by Bobby_M View Post
I have to ask. You already have your grain bill in BTP so why wouldn't you just look at the "efficiency" field to know your efficiency?
As far as I understand, the efficiency field is to indicate the expected efficiency when formulating the recipe. I haven't seen where it will calculate the actual efficiency of a partial mash based on SG and volume data. Maybe I'm missing the boat on this?

-Steve
__________________
On Deck: Jamil's Vanilla Robust Porter
Fermenting: Orange Blossom Mead
Kegs: Element 56 Pale Ale, Ron's Belgian Blonde, Summer'n Saison, Furloughktoberfest '09, Grateful Pale Ale, Sam Adams Cream Stout Clone, EdWort's Apfelwein
Planning: n/a

 
Reply With Quote
Old 07-30-2009, 04:44 PM   #10
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,335
Liked 1765 Times on 1122 Posts


You can do as suggest above... keep modifying the efficiency number until the OG matches what you measured, but you can also just click on the ANALYSIS tab and enter your measured OG.

Now, getting a bit more specific...
If you're measuring preboil gravity, make sure the preboil "kettle" volume that the software says you should have is actually what you DO have. Then hold the mouse over that field (kettle volume) and it will pop up a window that shows you what the preboil gravity should be (if you're on track for your expected efficiency that is). If it doesn't match, adjust the efficiency until it does.

If you're done with the boil and want to measure brewhouse efficiency, make sure your fermenter volume accurately matches the finished batch size in the software (adjust if necessary), then go to the analysis tab and over-write your OG. Now it will tell you your brewhouse efficiency.
__________________
Welcome to BrewHardware.com. I love you.
New Stirplates are IN!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Partial Mash - Efficiency? gregblatz All Grain & Partial Mash Brewing 2 11-04-2009 10:16 PM
Partial Mash Efficiency realestatecat All Grain & Partial Mash Brewing 8 01-09-2009 03:30 PM
partial mash efficiency Hercules Rockefeller All Grain & Partial Mash Brewing 6 10-29-2007 09:26 PM
Partial Mash Efficiency uwmgdman All Grain & Partial Mash Brewing 5 12-28-2006 12:26 AM
Partial Mash/Mini Mash Efficiency uwmgdman All Grain & Partial Mash Brewing 12 06-21-2006 01:09 AM


Forum Jump