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Old 08-16-2011, 08:20 AM   #1
Snotpoodle
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Default Water per pound of grain for mash?

I have seen some interesting numbers around how much water to add per pound of grain for the mash.

I helped with a brew at a 500 litre brewery last week (test brew for a large commercial brewery), and the number was around 3.5 litres per kilogram of grain.

Converted, thats around (3.5litres) 0.9 gallons of water to (1kg) 2.2lbs of grain.

I have tried several different methods, and I have found it a lot easier to go higher on mash water volume in the beginning, to give me better circulation, clearer wort and a larger first runnings.

Thoughts?


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Old 08-16-2011, 09:52 AM   #2
bullinachinashop
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1.25 Quarts per pound. +/-


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Old 08-16-2011, 10:19 AM   #3
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I do 2 quarts per pound for most recipies.
Mash thickness has little effect on the final taste. It effects the brewing process.
In my opinion
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Old 08-16-2011, 10:55 AM   #4
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Quote:
Originally Posted by bullinachinashop
1.25 quarts per pound. +/-
+ 1
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Old 08-16-2011, 10:58 AM   #5
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1.25L/lb

Because the two units are so close, that's only about 5% more water than the guys measuring it in quarts.

IIRC, as long as you leave it long enough to fully convert (which requires even being ABLE to do so), a thicker mash can get you higher efficiency, especially if batch sparging, because it lets you sparge with more water to really get at all the residual sugars.
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Old 08-16-2011, 11:04 AM   #6
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According to Brewing Science and Practice, you can get up to 7 l/kg without any negative effects to the amount extracted. So really anything from 2.6l/kg upwards seems okay, and really just up to the brewer.
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Old 08-16-2011, 11:37 AM   #7
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Thanks lads.

I guess Coolmac addressed my concern - i.e. could you ever mash with too much water.

I'll continue to go high on my mash volumes.

Thanks.
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Old 08-16-2011, 08:30 PM   #8
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I have no personal experience to back this up, but from what I have read "too much water" is around 1 gallon per pound. I don't remember what kind of problems it causes, but thats also A LOT of water to be mashing with.
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Old 08-16-2011, 10:06 PM   #9
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1.33 qt/lb.
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Old 08-16-2011, 10:08 PM   #10
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Quote:
Originally Posted by bullinachinashop View Post
1.25 Quarts per pound. +/-
+/- anything (within reason). It doesn't matter a whole lot as long as you actually have some water in there


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