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General Category => All Grain Brewing => Topic started by: Chavez324 on July 11, 2013, 05:55:34 PM

Title: Batch conversion
Post by: Chavez324 on July 11, 2013, 05:55:34 PM
Looking to make a 10 gal batch from a 5 gal recipe. Do I just multiply all the ingredients by 2?
Title: Re: Batch conversion
Post by: fmader on July 11, 2013, 06:01:37 PM
Don't multiply your water by two. You still boil off at the same rate. With everything else, I would say yes.
Title: Re: Batch conversion
Post by: duboman on July 11, 2013, 06:13:15 PM
Basically yes but IME you will lose a little efficiency in your mash with the larger grain bill

This is assuming you're doing all grain:)
Title: Re: Batch conversion
Post by: Chavez324 on July 11, 2013, 06:57:51 PM
I was gonna be using 13.125 gal water w 35lbs of grain. Doin a Dreadnaught clone, shooting for an O.G. of 1084 @ 90 min boil.
Title: Re: Batch conversion
Post by: ynotbrusum on July 12, 2013, 04:21:56 AM
You have a long boil here, so be aware of the fact that most boil off rates are per hour.  Plus with that much grain, your absorption will be pretty high - something like 30 pints....
Title: Re: Batch conversion
Post by: AmandaK on July 12, 2013, 05:57:28 AM
The hops are a bit different. Use IBUs and scale the amounts from there. Plenty of good calculators on the internet, like brewersfriend.com
Title: Re: Batch conversion
Post by: larsonkd on July 12, 2013, 02:07:44 PM
Make sure you have a plan for the volume of wort you are producing.  Using a 10-12 gallon carboy is best to keep the wort together as a whole...but make sure you have some help as the end product will be VERY heavy for a one man lift. I usually keep my 12 gallon carboy on a dolly, so once complete I can roll it away.

If you split the batch into two five/six gallon buckets or carboys, I recommend using a 'T' connector to get even collection of the wort from beginning of collection to end in both buckets/carboys.
Title: Re: Batch conversion
Post by: liquidbrewing on July 15, 2013, 04:10:37 AM
The last time a fellow brewer and I collaborated,  I wanted to try my "T", into two carboys, our flow promptly slowed to stop.  I don't recommend it!
Title: Re: Batch conversion
Post by: AmandaK on July 15, 2013, 05:38:16 AM
The last time a fellow brewer and I collaborated,  I wanted to try my "T", into two carboys, our flow promptly slowed to stop.  I don't recommend it!
Would a "Y" connection have been better? (I'm thinking that the T didn't work due to turbulence.)