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Old 11-05-2008, 05:10 PM   #1
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Default Batch size is ?????

Is it the amount of brew once it is bottled? Amount that will go into the bottle bucket? The amount that will go into he fermentation carboy???

I was looking in Brewing Classic Styles and the have.

7 gallon boil
6 gallons at the end
5.5 gallons going into the fermenter
5 gallons into bottles

So is batch size 5 gallons or 5.5??? Seems logical but I've never SEEN it in print.

and YES - I did a search!!! very helpful.

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Old 11-05-2008, 05:14 PM   #2
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My understanding is that batch size is the volume you have after boiling and top-up (if top-up is added).

So you have 7 pre-boil, 6 post-boil, leave .5 gallons in the kettle with the trub, and then leave .5 gallons in the fermenter with the yeast.

So you have a 6 gallon batch size with a gallon of loss for a total of 5 gallons of finished beer.

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Old 11-05-2008, 05:33 PM   #3
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My batch size is the amount remaining at the end of the boil. To use your example, it would be 6-gallons.

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Old 11-05-2008, 05:37 PM   #4
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Jamil's recipes are all calculated for 6 gallons, the amount in the kettle at flame out.

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Old 11-05-2008, 05:37 PM   #5
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Quote:
Originally Posted by Grinder12000 View Post

and YES - I did a search!!! very helpful.
Orfy tends to be that way:
Quote:
Originally Posted by orfy View Post
Final Batch size.
The word "Final" tells me that he considers it to be the fermented volume.

You could "Claim" that every batch of beer you make is refined from the trillions of gallons of water on the planet. What difference does it make?
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Old 11-05-2008, 05:37 PM   #6
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Quote:
Originally Posted by cmgray View Post
My understanding is that batch size is the volume you have after boiling and top-up (if top-up is added).

So you have 7 pre-boil, 6 post-boil, leave .5 gallons in the kettle with the trub, and then leave .5 gallons in the fermenter with the yeast.

So you have a 6 gallon batch size with a gallon of loss for a total of 5 gallons of finished beer.
I think 7 pre boil, 6 post boil, 5.5 goes into fermenter and 5 goes into bottles leaving 1/2 gallon of trub in the primary.

You want to transfer your trub to your primary since there are plenty of nutrients in there for yeast to have fun with over the course of fermentation.
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Old 11-05-2008, 06:45 PM   #7
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I take batch size as the amount of finished beer I have which is usually 4.8-5 gallons. I almost never have more than 5 gallons and usually a qt or so less..Especially with AG, with extract beers I used to always get the 54 12 oz bottles or whatever the amount is 'supposed' to be but as long as I hit my pre-boil OG and post boil OG I'm good to go...now when I bottle I assume 50 bottles and sanitize this amount and usually have a few empties left over.

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Old 11-05-2008, 08:25 PM   #8
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using beersmith to input Jamil's recipe's:

(make sure your evap. rate is set to 15%, which is assumed for the book)

he lists a pre-boil volume as 7 gallons (26.5L)
6 gallons (22.7L) into kettle
5.5 gallons (20.8L) into fermenter
5 gallons (18.9L) packaged beer

beersmith has the batch size at 6 gallons (22.7L)...the amount in the kettle at flame out as posted by flyangler18.

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Old 11-05-2008, 08:40 PM   #9
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Well - now that we have three different answers! I see there is a problem LOL

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Old 11-05-2008, 09:29 PM   #10
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For entering the recipes into Beersmith (or others), the batch size is 6 gallons (post-boil amount). This is the batch size that you will use to determine your ingredient amounts since your OG is set after it's boiled and cooled (unless you add fermentables or top-up water to the primary or secondary).

EDIT: actually, re-reading it, the "recipes are designed to leave 6 gallons of wort in the kettle at the end of boil", yet the evaporation rate is 15% and the boil time is 1 hour (boils off 1.05 gal, leaving 5.95 gal, close enough I guess). Cooling from there at 4% loss would be 5.71 gal. So it looks like 5.71 gal batch size will determine your ingredient amounts.

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