meassure

Alan Sullivan · 03-23-2006, 02:41 PM

Hey, I.ve been making beer in a 225lts fermentor but always made 150lts.I decided to make two brews and fill the fermentor till 225lt. So that makes 105lt
How do you calcule the IBU´s to mix with the first batch?
Tala

**Walker** · 03-23-2006, 02:59 PM

I'm not quite sure I follow this. Actually.. I'm SURE I don't follow this.

You have a 225 liter fermenter that you normally make 150 liter batches of beer in. Correct?
(edit: that's a BIG f*cking fermenter man!)

Then you decided to make a double batch and fill the fermenter all the way to the top. Correct?

Here's where I get lost:

Quote:

Originally Posted by Alan Sullivan

So that makes 105lt

And, I don't understand the question:

Quote:

Originally Posted by Alan Sullivan

How do you calcule the IBU´s to mix with the first batch?

I apologize if I am being dense here. I would like to help, but I don't understand the situation.

-walker

mpetty · 03-23-2006, 03:15 PM

Yeah, I think you forgot decimal points and a few other things. Either that or you are a very clueless commercial brewer.

IBU's are a measure of bitterness, to calculate them, you need to know the kind of hops you added, how much of those hops you added, and when in the boil you made each of your additions.

**Baron von BeeGee** · 03-23-2006, 03:49 PM

Quote:

Originally Posted by Alan Sullivan

Hey, I.ve been making beer in a 225lts fermentor but always made 150lts.I decided to make two brews and fill the fermentor till 225lt. So that makes 105lt
How do you calcule the IBU´s to mix with the first batch?
Tala

Would it not make 75L? The difference between 225L and 150L is 75L, not 105L.

Are you mixing two different beers? If they're the same beer, they should have the same IBU's, regardless of what quantity you mix. You may have to make some adjustments to your hop bill depending on how changing the volume of your boil affects IBU's on your system, but I'd ignore that for the short-term and refine it after you get some empirical data.

Alan Sullivan · 03-23-2006, 04:03 PM

I´ll try to make myself understandable...
My equipment can brew 150lts per batch. My fermenter can hold 255lts. So I have to make another bath (smaller) 105lts to fill my fermentor.
Sorry, while I´m writing this lines I just understood the answer.
I´m from Argentina, where are you guys from?

Lou · 03-23-2006, 04:04 PM

USA.
are you making beer for your entire town?

**Baron von BeeGee** · 03-23-2006, 04:06 PM

Quote:

Originally Posted by Alan Sullivan

I´ll try to make myself understandable...
My equipment can brew 150lts per batch. My fermenter can hold 255lts. So I have to make another bath (smaller) 105lts to fill my fermentor.
Sorry, while I´m writing this lines I just understood the answer.
I´m from Argentina, where are you guys from?

Que buena onda (sorry, my wife is from Mexico). Why not do two equal batches of ~125L? That would fit your equipment and result in a full fermentor, plus you would not have to adjust the recipe.

Alan Sullivan · 03-23-2006, 04:08 PM

clueless brewer...I don´t think so...just making conversation, and of course I know what IBU´s are...
thank for the reply!
tala

**Walker** · 03-23-2006, 04:09 PM

Quote:

Originally Posted by Alan Sullivan

So I have to make another bath (smaller) 105lts to fill my fermentor. Sorry, while I´m writing this lines I just understood the answer.

Yup... just cut out about 33% of the recipe and brew the smaller batch.

Also, a lot of us are from the USA and the remainder are from the UK.

I think you are brewing as much beer in a single shot as I brew over the course of 6 months! Nice.

-walker

Alan Sullivan · 03-23-2006, 04:09 PM

Quote:

Originally Posted by Baron von BeeGee

Que buena onda (sorry, my wife is from Mexico). Why not do two equal batches of ~125L? That would fit your equipment and result in a full fermentor, plus you would not have to adjust the recipe.

Good Idea! I´ll try that!