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Old 11-12-2007, 03:15 PM   #1
Mr. Mojo Rising
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Feb 2007
Charleston, Il
Posts: 209
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What has been the most successful ratio that homebrewers use here? I have not seen a good discussion on it. It will help me decide wheter to pull my mash out water from the intial mash water quantity or my sparge water, or whether to increase my total water quanity.

15 Gal Conical - The Three Nobles-German Pils
Secondary - The Comrade-Imperial Russian Stout
Tap 1 - The Goodness-APA
Tap 2 - The Unicorn-Honey Nut Brown
Tap 3 - The Blarney-Irish Red

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Old 11-12-2007, 04:54 PM   #2
Apr 2006
My House
Posts: 522
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1.25 quarts per pound of grain is the average.

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Old 11-12-2007, 05:16 PM   #3
Mar 2007
Posts: 49

Iíve been brewing 5 gallon batches for a while now and if Iím making a lighter beer with a starting gravity of around 40, it will take about 10 lbs of grain. Iíll heat 6 gallons of water to 185 deg F and set another 2 gallons aside at room temperature. Then Iíll start off with 2 gallons of the hot water in my 10 gallon Gott cooler which is my mash tun.

Start adding grain and stirring with a spoon. When things get so thick that you can no longer get the grain on top wet, add some more hot water. Try to get as much grain in with as little water as possible.

When all the grain is in, check the temperature and add hot or cool water to reach desired temp. 153 deg F for sweeter beers or 147 for dryer beers.

Hints: Its easier to cool down the mash than it is to warm it up, especially if you can not apply direct heat because youíre using a cooler for the mash. So aim high and be careful about adding cool water.

Once all the grain is in, do not over react to an initial high temp reading. It takes about 5 minutes of stirring for temps to even out Ė the initial temp of the cooler and all the other variables will conspire to bring the temperature down. So wait and stir for 5 minutes and then make your adjustments using hot or cool water.

The water to grain ratio may be 2.5 to three gallons of water for 10 lbs of grain. For me, the ideal mash will have enough water to soak all the grains but not so much that they are swimming around freely. Remember, for conversion of the starches to work, the enzymes must be in physical contact with the starches, so you donít want to dilute things too much.

For rinsing the grains, I use the remaining 4 gallons of water and try to end up with 6 gallons of wort for my 5 gallon batch of beer. I louse about a gallon when initially transferring from the boiler to the primary fermenter.

For higher gravity beers, I will use more grain and rinse with more water. For a Bock beer, I may end up with 8 gallons of wort and then boil it for an hour to get it down to the 6 gallon mark before taking an OG reading.

I hope this will give you an idea of what the water to grain ratio should be, but itís really more of an art than a science.

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Old 11-12-2007, 06:02 PM   #4
Got Trub?
Apr 2007
Washington State
Posts: 1,538
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I use 1.25

Increasing or decreasing the ratio can affect fermentability - but only to a very small degree. Mash temp is much more critical.


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Old 11-12-2007, 06:04 PM   #5
For the love of beer!
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Sep 2005
Cheshire, England
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Have a beer on me.

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Old 11-12-2007, 07:06 PM   #6
Dr Malt
Aug 2005
Pacific Northwest
Posts: 305
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1.25 quarts/lb of grain most of the time.

It varies for me depending on the beer style from 1.0 - 1.5 qts/lb. I was just reading about making a helles and the book suggests the low end of 2 qts/lb grain up to 3.5 qts. That seems a little thin by my experience.

Dr Malt

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Old 11-12-2007, 07:41 PM   #7
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Sep 2006
Ontario, Canada
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I usually use 2.5L/KG but that can vary depending on how fermentable I'm trying to make my wort.
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Old 11-12-2007, 10:05 PM   #8
Oct 2006
Western slope of Pikes Peak
Posts: 230
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Originally Posted by orfy
Why don't you Brits use the English system of weights and measures? It's soooooo much simpler

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Old 11-13-2007, 04:27 AM   #9
It's a sickness!
Gabe's Avatar
Apr 2006
Central coast
Posts: 715
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Roughly 1.10. I like my mashes a little thicker for some reason. I just have always done it that way.

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Old 11-13-2007, 04:54 AM   #10
Kevin Dean
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Jul 2007
Frederick, MD
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Originally Posted by IowaStateFan
Why don't you Brits use the English system of weights and measures?
Because they like dealing with the rest of the world.
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