Double Batching in Same Fermenter

Northern Brewer General
1

Howdy fellas,

Quick question.

Brewed up five gals, split between two carboys. Day two, going nicely.

I’d like to drop another 2.5 gals into each carboy. Normally, I do this within 24 hours, but
I can’t this time.

Ever do this and would you think waiting 3-4 days would be a problem?
Any comments or notes on technique (such as, don’t splash or aerate after x amt of time, etc.) appreciated.

JimDandy

2

As long as they’re active, it shouldn’t be a problem. I’d aerate the new wort separately before adding it, but that’s probably just paranoia.

3

I think it should be fine. You’ll still have at least 50% of the sugars left, so the yeast will eat up the oxygen. I would be careful to make sure what you’re adding is close to the same temperature as what you’re adding it to. Let us know how it turns out.