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Brewing Topics => All Grain/Advanced => Topic started by: BrightSpotBrewing on June 12, 2011, 08:45:45 AM

Title: Splitting a 12 gallon batch into two 6 gallon batches...
Post by: BrightSpotBrewing on June 12, 2011, 08:45:45 AM
I've always brewed 6 gallon batches, but have the capacity to brew larger batches. Since both of my kegs are going to be empty at the same time in about 2 weeks (party coming up), and I wasn't feeling up for another double brew day, I designed a Northern German Altbier that also loosely fit parameters for a Brown Ale... though this brown ale will have a large proportion of German Pils malt  :). While I intended on doing a 12 gallon batch, my 60 qt boil kettle looked pretty full with about 13 gal, and about 2 gal boiled off- I ended up with about 10.5 gallons, which was great! Once the boil was over and the wort chilled, I split split the batch into 2 fermenters- for the Altbier I used WLP029 (German Ale/Kolsch), while I pitched WLP007 (Dry English) into what I'm calling the Brown Ale. The only other difference is I will be dry hopping the Brown Ale with 1 oz of Northern Brewer once fermentation is complete. I'm excited to see what differences emerge.

Has anyone done anything like this- brewing 2 different batches of beer from the same boil? Anyone do it often?

I'll let you know how things look as these 2 beers develop!

Cheers!
Title: Re: Splitting a 12 gallon batch into two 6 gallon batches...
Post by: SOGOAK on June 13, 2011, 01:26:10 PM
That is my Standard Proceedure.  You get 5 more gallons for about an extra hour and $10-15.  Plus the chance to mix and match yeast and dry/keg hop schedules is fun.
Title: Re: Splitting a 12 gallon batch into two 6 gallon batches...
Post by: BeerSmith on June 13, 2011, 02:24:59 PM
Hi,
  Yes - this is called parti-gyle brewing and I did an entire episode on it a few episodes back on the BeerSmith podcast - see the BeerSmith blog and look for the episode called "Multiplying your beer"

Brad
Title: Re: Splitting a 12 gallon batch into two 6 gallon batches...
Post by: brewnut on June 19, 2011, 03:56:13 PM
You're actually right to split it into two different styles. I've found that you have almost no chance of having a split batch come out as the same beer after they're split up. I'v found that even kegging some and bottling some can subtly change the character of the beers.