| |
Main
Date: 02 Nov 2006 17:32:37
From: Dick Adams
Subject: Mash Tun Size
|
I put in a patio so I would place to cook all-grain. My first
all-grain outdoor project will my favorite vice: 15 gallons of
an Arrogant Bastard Clone. We have a 20 gallon cooler that I
just appropriated and my brew kettle is a 15.75 half barrel.
When I've done this as an extract I have mashed 3 lbs each of
CaraMunich, Special-B, Aromatic and, Biscuit. Then added it
to 15 lbs of Amber LME and 15 lbs of Wheat LME.
What's the conversion rate from LME to malted grain?
Dick
|
|
| |
Date: 02 Nov 2006 10:04:38
From: Scott L
Subject: Re: Mash Tun Size
|
Dick Adams wrote:
> What's the conversion rate from LME to malted grain?
There is no one number because it depends on efficiency.
The rule is 1.22 / efficiency. So if your efficiency is 60%, then you
need 1.22 / 0.6 = 2 times as much grain as you would use of extract. So
substitute 20 pounds of grain for 10 pounds of extract, for example.
Suddenly makes you want to have a better efficiency than 60%, doesn't
it? :-)
Scott
|
| | |
Date: 03 Nov 2006 16:17:20
From: John 'Shaggy' Kolesar
Subject: Re: Mash Tun Size
|
On 2 Nov 2006 10:04:38 -0800, <scott-sp02@neuralnw.com > wrote:
> Dick Adams wrote:
>> What's the conversion rate from LME to malted grain?
>
> There is no one number because it depends on efficiency.
>
> The rule is 1.22 / efficiency. So if your efficiency is 60%, then you
> need 1.22 / 0.6 = 2 times as much grain as you would use of extract. So
> substitute 20 pounds of grain for 10 pounds of extract, for example.
>
> Suddenly makes you want to have a better efficiency than 60%, doesn't
> it? :-)
IMO, 2 times as much sounds way too high. Where does the "1.22 / efficiency"
rule come from? It doesn't sound right.
John.
|
| |
Date: 03 Nov 2006 16:14:02
From: John 'Shaggy' Kolesar
Subject: Re: Mash Tun Size
|
On Thu, 02 Nov 2006 17:32:37 -0000, <rdadams@smart.net > wrote:
> I put in a patio so I would place to cook all-grain. My first
> all-grain outdoor project will my favorite vice: 15 gallons of
> an Arrogant Bastard Clone. We have a 20 gallon cooler that I
> just appropriated and my brew kettle is a 15.75 half barrel.
>
> When I've done this as an extract I have mashed 3 lbs each of
> CaraMunich, Special-B, Aromatic and, Biscuit. Then added it
> to 15 lbs of Amber LME and 15 lbs of Wheat LME.
>
> What's the conversion rate from LME to malted grain?
Unfortunately, there's no easy answer. It depends on what your
efficiency is. This will be different for every brewer.
If it's your first all-grain (or did you just mean your first outdoor
all grain), I'd assume a fairly low efficiency. I'd probably guestimate
it at 65% or so. Once you do a bunch of all grain beers (assuming you
haven't already), you'll get an idea of what your typical efficiency is.
LME gives you 36 ppg. You need to take the max ppg of a certain grain and
multiply it by your efficiency to find the conversion. Howtobrew has a
nice chart for different grains that I like to use. You want to grab
the number from the "Max PPG" column.
http://www.howtobrew.com/section2/chapter12-4-1.html
2-row pale ale malt, for example, has a Max PPG of 38. So with a 65%
efficiency, that makes it 24.7 ppg. So in that case for each lbs of LME
you would need 1.45 lbs of 2-row.
36 / 24.7 = 1.45
What makes it a bit tricky is that just using 2-row probably won't be
equivalent to an Amber LME (it would basically give you a light LME).
You need to figure out what else the extract company used when they made
their "amber" extract. Most of the time they don't really tell you.
Once you figure out what combination of grains you want, you can do all
the math out by hand to figure out the amounts. Most of us will go with
one of the brewing software programs to do that for us though. ;)
John.
|
|
