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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Combine 2 batches
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Old 05-23-2013, 12:06 PM   #1
Fakie
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Default Combine 2 batches

First post! I've been reading for a long time and you guys pretty much taught me how to make beer. Thank you!!

I have equipment to make all grain 3 gal batches. I want to make a bigger Oktoberfest this year. I was thinking of brewing two regular batches and then combining into 6 gal carb.

I'd rather not brew twice in one day...long day! I was thinking of splitting it sat and sun. What do I do with the beer from sat until Sundays batch is done? Keep in 3g carb? Pitch yeast? Use 6g carb?

Thank you!!
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Old 05-23-2013, 04:50 PM   #2
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I'd pitch into the first batch once its down to temp (50ish) and rack the 2nd batch when its ready. i'd think twice about putting 6gals into a 6gal carboy tho.
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Old 05-23-2013, 06:21 PM   #3
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I won't actually have 6 gallons. They end up being less than 3 gal. I just use 3gal carbs. I'll leave head space.

So I should brew 2.5g sat into 6gal carb and pitch and then add the other 2.5g on Sunday and pitch the rest of the yeast?
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Old 05-23-2013, 06:31 PM   #4
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you shouldn't need to add anymore yeast, the first half will essentially act as a starter for the rest
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Old 05-23-2013, 06:32 PM   #5
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I think I'm a little confused at what you're going to try to do. How do you plan on making it bigger? Bigger as in more, or bigger as in increased alcohol. I would think to wait until you have all of your finished wort ready to go before you pitch, but dcp27 probably has a little experience over me, so between the two, I'd choose their advice.
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Old 05-23-2013, 06:37 PM   #6
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Sorry...probably making this more difficult than it should be. Bigger as in more volume.

If I generally use a pack of dry yeast for a 3g batch, do I pitch 2 packs with Saturdays beer and then just rack Sundays beer on top when ready? Or should I add one pack of yeast Saturday and then the other one Sunday?

Thanks for the help!
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Old 05-23-2013, 06:45 PM   #7
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If its a standard yeast packet, that's what most of us use for 5 gal batches anyway, so you likely need just one. And as dcp27 said, if you pitch in the first one on Sat, it should act as a giant starter and you shouldn't need to pitch again at all. The only thing I'd say is be as conscience as possible about sanitizing.
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Old 05-23-2013, 07:03 PM   #8
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given you have some activity come the time to add the 2nd half, 1 pack will be fine

i've done it, so I know it works, but if you want some other proof, you can use this if you'd like to see for yourself (put in full batch at the top & step 1 as your first half): http://yeastcalc.com/

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Originally Posted by twistr25 View Post
If its a standard yeast packet, that's what most of us use for 5 gal batches anyway, so you likely need just one. .
being a lager you would need 2 for a 5gal batch
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Old 05-23-2013, 07:04 PM   #9
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Ok I'm with you. I just assumed that you used more than a pack for 5g batches. I've never made that much. I understand the theory with the starter too.

Thank you for you help...much appreciated!! Cheers
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