Splitting a 5 gallon batch into 2 batches - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Extract Brewing > Splitting a 5 gallon batch into 2 batches

Thread Tools
Old 07-20-2006, 08:58 PM   #1
May 2005
Portland, Oregon Beervana!
Posts: 18

Does anyone have any experience, recommendations, or thoughts on splitting a 5 gallon full wort boil into 2 separate 5 gallon batches. I'm thinking this would be similar to or replicate boiling a 2.5 gallon extract batch and adding it to a single 5 gallon fermenter.

Reply With Quote
Old 07-20-2006, 09:04 PM   #2
Truble's Avatar
Oct 2005
Boston, MA
Posts: 1,101
Liked 9 Times on 7 Posts

a 2.5 extract boil is "concentrated". The fermentables are calculated on a 5G batch.

In order for that to work, you would need to double your fermentables for the 5 G boil, then split it, right? If it is a normal 5G batch, then you will dilute it by splitting it.
Even the strongest blade of grass bends in the wind

Primary: Octoberfest
mini 1G Primary: nichts
Secondary #1: #97 Pale Ale
Secondary #2 nichts
Bottled/Conditioning: nichts

Fully ConditionedDrinking: nichts
All Gone!:

Reply With Quote
Old 07-20-2006, 10:52 PM   #3
Jun 2006
South River, NJ
Posts: 2,587
Liked 21 Times on 17 Posts

It may be a little tough to split it exactly though. You're really better off using two seperate stock pots, and boiling them at the same time.

Its not the amount of Wort thats important, its the concentration of fermentables in there. As long as you use twice the ingredients, split it evenly, and fill the primaries with water to the same mark you should end up with the same beer. It would help our a lot if you had primaries that were the same shape and size so you could eyeball it easier. --or volume labeled like mine are...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~
~~~~~~~~~~~___//_ ____________________________~~~~~~~~~~~
~~~~~~~~~_/ [][]| | /```\/```\/```\/```\/```\ |~~~~~~~~~~
~~~~~~~_/_______| |____NOW TRIPLE HOPPED______|~~~~~~~~~~
~~~___/[_]| 00 /| | \,,,/\,,,/\,,,/\,,,/\,,,/ |~~~~~~~~~~
~~|___|___|___/_| |___________________________|~~~~~~~~~~
~~|=(*)[________]==(*)(*)=| \________/=(*)(*)=|~~~~~~~~~~

Reply With Quote
Old 07-20-2006, 10:54 PM   #4
david_42's Avatar
Oct 2005
Oak Grove, Oregon, USA
Posts: 25,595
Liked 153 Times on 144 Posts

No difference, just be careful in calculating your bittering. I only did this once, with a red ale, as a dry hopping experiment.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"

"I would like to die on Mars, just not on impact." Elon Musk

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Splitting batches in small primaries OHIOSTEVE Beginners Beer Brewing Forum 1 10-05-2009 01:31 AM
Splitting a batch with different additions into 1 gallon jugs antheus Beginners Beer Brewing Forum 3 04-18-2009 04:39 AM
Splitting a Starter into 2 Batches Bopper General Techniques 5 08-20-2008 04:11 PM
Splitting 10g Batches Chris_Dog General Beer Discussion 4 01-02-2008 04:07 PM
splitting batches balto charlie All Grain & Partial Mash Brewing 15 12-15-2007 06:23 AM

Forum Jump