Possible to gain 15 pts. eff. by increasing to 12 gallons? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Possible to gain 15 pts. eff. by increasing to 12 gallons?

Thread Tools
Old 06-28-2010, 04:20 PM   #1
Dec 2007
Posts: 61
Liked 1 Times on 1 Posts

I brewed my second 12 gallon batch on saturday.

It was supposed to be a special bitter (1.050). I did everything as usual, but i had my intended OG at the *beginning* of the boil, i.e., I collected 14 gallons of 1.050 wort. This calculated out to 89% efficiency! Oh, and I'm a batch sparger. My special bitter is now technically an ESB, I guess.

My first big batch was an IPA (1.065) it was only a ten gallon, and I got typical efficiency 77%.

So, assuming I didn't mismeasure the grains (and I'm sure I didn't), is it possible to get this type of efficiency bump, by virtue of the larger batch size? (please also assume that my hydrometer works and my calculations are correct, etc.) Thanks

Reply With Quote
Old 06-28-2010, 04:38 PM   #2
lowlife's Avatar
Jan 2009
Posts: 654
Liked 11 Times on 8 Posts

Normally a larger batch size is less efficient for us homebrewers

Reply With Quote
Old 06-28-2010, 04:47 PM   #3
I use secondaries. :p
Walker's Avatar
Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts

Originally Posted by lowlife View Post
Normally a larger batch size is less efficient for us homebrewers
My experience is different, but I think it has more to do with how I sparged than anything else.

I normally do 5 gallon batches and use batch sparging. I just dump one big load of water in for the sparge, stir, let rest, and drain to BK.

I did a couple of 10 gallon batches earlier this year and did not have enough room in my 10 gallon MLT to dump all my sparge water in at once, so I split the sparge into two equal volumes and did two sparges.

My efficienty went from my typical 75% up to about 82% on those two 10 gallon batches. I believe it was due to using two sparge additions instead of just one.

I keep meaning to test this by doing a 5 gallon batch with split sparge water, but I always forget and just dump it all in at once.
Ground Fault Brewing Co.

Reply With Quote
Old 06-28-2010, 04:57 PM   #4
JuanMoore's Avatar
Oct 2009
The Old Pueblo
Posts: 22,386
Liked 3737 Times on 3550 Posts

You should have slightly higher efficiency just because it's a lower OG than the IPA, but not that much higher. How are you measuring your volumes, and are you correcting them for temperature? If your process was the same, I'm guessing one or more of your measurements may be off somehow, as increasing batch size shouldn't have much effect on efficiency. Here's a good explanation on how measurement accuracy effects efficiency calculations.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gain in ABV using Fermaid-K? dmfa200 Fermentation & Yeast 7 05-10-2010 08:18 PM
What would I gain by doing a secondary right now? TrojanAnteater General Techniques 4 02-07-2009 06:03 PM
First All Gain in the fermenter! kinison_fan All Grain & Partial Mash Brewing 4 02-10-2008 02:34 PM
Sparging 45 min vs 30 = BE% gain? LS_Grimmy All Grain & Partial Mash Brewing 28 01-30-2008 02:35 PM
New To All Gain Water Question Lost Brews All Grain & Partial Mash Brewing 10 06-29-2007 12:21 AM

Forum Jump