What is 'Batch Size'?

Question

What is 'Batch Size'?

Hopwise

2011年12月27日 02:05

I've seen the term 'batch size' applied to three different things:

Volume of wort put into the fermenter
Volume of finished beer that comes out of the fermenter
Post-boil wort volume

Is there an agreed-upon definition of 'batch size'?

Update

Well, there's one answer that says #2 and another that says #1. I personally believe the answer is #3, since its post-boil volume that sets the OG. It seems like there's no agreed-upon definition of this term, so I'm going to close this question.

Topic batch-size homebrew

Category Mac

Kevin Colby · Accepted Answer · 2011年12月21日 18:11

When I'm brewing I typically think about what volume is going into the fermenters more than anything further down the line. This usually directly relates to what goes into the keg or into bottles but depends greatly on losses later in the process.

To twist dana's excellent example (and to be clear I do not completely disagree with his definition) when you make up a batch of batter the final number of pancakes depends greatly on the size of said pancakes (ok this is akin to bottle sizes so you're still good). However your ladle/scooping process will impact the number of pancakes since you will have losses to the bowel and to the scooper that aren't dependent on the batter recipe. So there's still a little room for interpretation.

I definitely agree that nothing pre-fermenter would in my mind be considered the batch size.

dana · Accepted Answer · 2011年12月21日 17:18

Batch Size is how much you package. Think of it like cooking, when creating a recipe your not shooting for so many cups of batter.. you want to know how many pancakes.

example:

I boil 7 Gallons (Pre-Boil Vol)
I end up with 6 Gallons (Post Boil Vol)
I ferment 5.5 Gallons
I then put 5 Gallons in my Keg.

This process makes a 5 gallon batch.

What is 'Batch Size'?

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