Enough Yeast For 60l Batch

[SG9090]

:icon_chickcheers:

I usually brew single batches, however just now time is hard to find and need to brew a larger batch. I want to brew a 60L batch. I will be using a fresh Wyeast 1968, and was wondering would it be ok to use the single pack or will i have to grow it up a bit? If so any recomended methods?

Any general guidence would be great,

Cheers,
Shane

 

[mxd]

grow, a single pack (theoretically) is not big enough for 20 ltrs, do a search for pitching rates.

 

[Wolfy]

You should still get beer if you pitch only one pack, but you will be under-pitching which can often have unwanted side-effects.
For the best results, use the MrMalty calculator, plug the details of your brew, let it work out how much yeast you need and then make an appropriate sized stater.

 

[argon]

Why not try double dropping? Do you no chill?

Assuming you do cube your hot wort prior to pitching, double dropping is a good way to make the yeast go a little further.

Last double batch I did I implemented the following process;
- Smacked a smack pack tillmit was nice and swollen
- Pitched this into 1 half of the double batch -20L
- After 24 hrs I noted signs of fermentation starting
- I then poured the contents of that fermenter into 2 others fermenters ensuring lots of aeration and splashing (just opened the tap and let it fall into the awaiting vessels)
- I then topped up each fermenter with the second half of the double batch
- Fermentation was off and running in about 12 hours

I've ended up with 80% efficiency and a nice clean beer, whilst only using 1 pack for 40L

 

[Pennywise]

Depending on the gravity, and the health of the yeast, but you'd need to make something like a 6L starter for a batch that big

 

[adryargument]

Depending on the gravity, and the health of the yeast, but you'd need to make something like a 6L starter for a batch that big

+1.

I struggle with a 2-3L starter for my 40L batches.

 

[manticle]

:icon_chickcheers:

I usually brew single batches, however just now time is hard to find and need to brew a larger batch. I want to brew a 60L batch. I will be using a fresh Wyeast 1968, and was wondering would it be ok to use the single pack or will i have to grow it up a bit? If so any recomended methods?

Any general guidence would be great,

Cheers,
Shane

I pack is generally enough for about 20 L of 1040-1050. If you are making 3 times that, you need 3 times the yeast. 3 packs or grow from the one. If you are no-chilling then Argon's suggestion is probably the easiest. Alternatively start fermentation with 20 L and add wort as fermentation progresses. I forget the name of this method but I believe it's common among German brewers. Zwickel has mentioned it a few times from memory. I have also heard of a trappist brewery using a similar method.