With a 10 gallon fermenter, I’ve been brewing two separate batches (5 gallons a piece). Both batches are combined in the conical fermenter after the wort chiller does its thing. I hold pitching the yeast until the second batch is ready of course. With all that being said, my question is one packet of yeast enough for 10 gallons or should I be using two?
It depends on the gravity, among other things, but why not try pitching the yeast at the start of transfer of the first 5 gallons instead of waiting? Give yeast a chance.
Definitely depends on gravity and yeast strain. Let’s say it’s 10 gal of an avg 1.048 Ale: 2 packs would be recommended.
Same gravity, 10 gal of Lager: 4 packs recommended.
Why wait for the second batch? The sooner it’s pitched the shorter the lag time. If you brew a day or two apart from each other you can get one batch going before adding the second batch, it possible to reduce the pitch size. But adding extra yeast will do little harm since it’s not likely that you will be creating an over pitch condition.
Fully agree… can’t imagine a scenario where I would ever think “Oh man… my beer is ready too quickly” Help those yeast fulfill their destiny!