### Author Topic: 1 gallon batches  (Read 2520 times)

#### curtdogg

• Brewer
• Posts: 431
##### 1 gallon batches
« on: January 19, 2016, 10:09:06 PM »
Does anybody know of software or links to better help calculate making small batch (1-2 gallon) brews? I'm finding it tough to enter small batch brews into beer smith apps in android.
Does anybody know a general rule of thumb to account for sediment loss?

Thanks for the help all. Have a great day.

Curtdogg

#### RPIScotty

• Guest
##### 1 gallon batches
« Reply #1 on: January 19, 2016, 11:02:16 PM »

Accounting for losses in a small batch means accurately measuring your system the first few go rounds. I typically start with around 1.5 gallons and usually put 1 gallon into bottles.

The easiest way to scale recipes is to not scale them by weight but by percentage. Take a 5 gallon recipe, convert it to a percentage based recipe and use PPG to get your numbers right for 1 gallon. I use Excel for recipes but am converting over to ProMash. There's really nothing to it.

#### curtdogg

• Brewer
• Posts: 431
##### Re: 1 gallon batches
« Reply #2 on: January 19, 2016, 11:26:24 PM »
Thanks a lot for the suggestions. I've been looking for a formula to convert to percentage.
Problems with caculators such as sparge water coming out in negative quantities or strike water needing to be 220 degrees f, just doesn't seem right.
Also in some calculators or software small batches just aren't an option in the drop down menus.
Can you recommend a PPG calculator you like?

R,
Curtdogg

#### RPIScotty

• Guest
##### Re: 1 gallon batches
« Reply #3 on: January 19, 2016, 11:29:04 PM »
Percentage is just a matter of dividing the weight of an ingredient by the total weight of ALL ingredients. So:

2 lbs of Pilsner malt in a 3 lb. grist is 67% Pilsner malt. PM me and I'll hook you up with my simple excel sheet.

Sent from my iPhone using Tapatalk

#### tommymorris

• Brewmaster General
• Posts: 2096
• Tommy M.
##### Re: 1 gallon batches
« Reply #4 on: January 20, 2016, 12:35:26 AM »
Are you converting from larger batch size recipes? If so, its best to create an equipment profile for the larger batch and an equipment profile for your batch size. Then use the recipe scaling function to map from one to the other.

If you just don't like the Beersmith user interface I can't really help.

#### erockrph

• Official Poobah of No Life.
• Posts: 6229
• Chepachet, RI
##### Re: 1 gallon batches
« Reply #5 on: January 20, 2016, 01:13:33 AM »
I use Brewer's Friend for that all the time. The scale function works pretty well for both volumes and efficiency conversion.

Sent from my XT1585 using Tapatalk

Eric B.

Finally got around to starting a homebrewing blog: The Hop Whisperer

#### Pricelessbrewing

• Assistant Brewer
• Posts: 174
##### Re: 1 gallon batches
« Reply #6 on: January 20, 2016, 05:52:44 AM »
It's not going to be helpful for recipe formulation, as I don't have it in place yet (working on it next week), but my mash calculator http://pricelessbrewing.github.io/BiabCalc will do your water volumes, temps, and efficiency expectations which you can plug a recipe scaling tool of your choice.

#### curtdogg

• Brewer
• Posts: 431
##### Re: 1 gallon batches
« Reply #7 on: January 20, 2016, 03:34:36 PM »
I really appreciate everybody's help and feedback.

I've used the BIAB calculators before, seems like I don't have enough info to fill it out completely i.e.; efficiency rates, trub loss, mash thickness, gravity readings. I know the boil off rate and the size of the pot etc.  I can't even begin to guess efficiency rates and such they ask for.  I only have a 2 gallon pot for now so until then I'll keep trying different things until it clicks. Eventually I'll get a larger pot and a burner.

So far I made a black IPA (all grain) bottle conditioning that turned out ok.  I have an English brown (extract) fermenting now. With the IPA I boiled for one hour assuming that is the norm for all size batches so I boiled of more than I should have and ended up with less than a gallon.

I really enjoy the brewing process from start to finish. I know it's going to take some time to get everything right.

Thanks again guys.

#### Pricelessbrewing

• Assistant Brewer
• Posts: 174
##### Re: 1 gallon batches
« Reply #8 on: January 20, 2016, 09:41:20 PM »
I really appreciate everybody's help and feedback.

I've used the BIAB calculators before, seems like I don't have enough info to fill it out completely i.e.; efficiency rates, trub loss, mash thickness, gravity readings. I know the boil off rate and the size of the pot etc.  I can't even begin to guess efficiency rates and such they ask for.  I only have a 2 gallon pot for now so until then I'll keep trying different things until it clicks. Eventually I'll get a larger pot and a burner.

So far I made a black IPA (all grain) bottle conditioning that turned out ok.  I have an English brown (extract) fermenting now. With the IPA I boiled for one hour assuming that is the norm for all size batches so I boiled of more than I should have and ended up with less than a gallon.

I really enjoy the brewing process from start to finish. I know it's going to take some time to get everything right.

Thanks again guys.

most of my inputs and outputs will have a mouse over description which might help.

Conversion Eff should be 90%+, I'd leave it at 92-95% for now until you determine your system.

Masthickness is usually described in the recipe, but it's personal preference for a lot of brewers, you can either leave it at 0.00 for mine which will go by the custom sparge volume entry,  or enter a mash thickness to override the sparge volume entry. I usually use 1.75-2 qt/lb for my biab, but I do batch sparge.

Trub loss for kettle is a matter of personal preference, I dump everything into the fermenter so mine is zero.

Truloss for fermenter is usually 6-10% of the batch size. So a 1 gallon batch would lose ~. 06-.1 gallon.

The gravity readings are used after the brew day,  and are used to calculate some info regarding that brew day.

#### RPIScotty

• Guest
##### 1 gallon batches
« Reply #9 on: January 20, 2016, 10:09:21 PM »
If equipment is in short supply you could go the Brooklyn Brew 1 gallon route mash in the pot and lauter with a strainer.

This has the advantage of using typical kitchen equipment until you get a BIAB bag or an MLT.

Sent from my iPhone using Tapatalk
« Last Edit: January 20, 2016, 10:11:07 PM by RPIScotty »

#### Frankenbrew

• Brewmaster
• Posts: 677
• South Shore Brew Club, SE Massachusetts
##### Re: 1 gallon batches
« Reply #10 on: January 20, 2016, 10:11:00 PM »
I suggest you purchase a five gallon kettle. They can be had at any of the big retailers for about \$39. It will allow you to do a 1.5-2 gallon mash and full boil--or, you can do a five gallon batch, partial boil. It is a great value, and you won't regret it.

Also, I think that the starting point for BIAB efficiency is more like 65%.
Frank C.

And thereof comes the proverb: 'Blessing of your
heart, you brew good ale.'

#### Pricelessbrewing

• Assistant Brewer
• Posts: 174
##### Re: 1 gallon batches
« Reply #11 on: January 21, 2016, 12:55:38 AM »
I suggest you purchase a five gallon kettle. They can be had at any of the big retailers for about \$39. It will allow you to do a 1.5-2 gallon mash and full boil--or, you can do a five gallon batch, partial boil. It is a great value, and you won't regret it.

Also, I think that the starting point for BIAB efficiency is more like 65%.

Common misconception, but typical is around ~72% mash efficiency.  Ranges up to 80% depending on proxess, recipe, equipment etc.

#### RPIScotty

• Guest
##### Re: 1 gallon batches
« Reply #12 on: January 21, 2016, 02:12:42 AM »
I can't get into BIAB. Something about opening a valve, vorlaufing, etc. just does it for me.

Sent from my iPhone using Tapatalk

#### erockrph

• Official Poobah of No Life.
• Posts: 6229
• Chepachet, RI
##### Re: 1 gallon batches
« Reply #13 on: January 21, 2016, 04:16:50 AM »
I suggest you purchase a five gallon kettle. They can be had at any of the big retailers for about \$39. It will allow you to do a 1.5-2 gallon mash and full boil--or, you can do a five gallon batch, partial boil. It is a great value, and you won't regret it.

Also, I think that the starting point for BIAB efficiency is more like 65%.

Common misconception, but typical is around ~72% mash efficiency.  Ranges up to 80% depending on proxess, recipe, equipment etc.
I'm at 82-84% preboil efficiency. Depends on how much bag squeezin' you're up for.
Eric B.

Finally got around to starting a homebrewing blog: The Hop Whisperer

#### curtdogg

• Brewer
• Posts: 431
##### Re: 1 gallon batches
« Reply #14 on: January 21, 2016, 05:19:17 AM »
I suggest you purchase a five gallon kettle. They can be had at any of the big retailers for about \$39. It will allow you to do a 1.5-2 gallon mash and full boil--or, you can do a five gallon batch, partial boil. It is a great value, and you won't regret it.

Also, I think that the starting point for BIAB efficiency is more like 65%.

Common misconception, but typical is around ~72% mash efficiency.  Ranges up to 80% depending on proxess, recipe, equipment etc.
I'm at 82-84% preboil efficiency. Depends on how much bag squeezin' you're up for.

I've always read bag squeezing isn't good. You could potentially get some unwanted flavors.