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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Accounting for lower efficiency, more water or more heat?
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Old 03-08-2008, 01:16 PM   #1
xumbi
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Default Accounting for lower efficiency, more water or more heat?

So I'm close to starting my first AG, I have one last question. When accounting for lower efficiency by adding more grain (I set my efficiency level to 60% in promash, which people seem to recommend for your first AG), do you:

a) Add the necessary amount of extra water?

or

b) Add the same amount of water, but at a higher temperature due to the thermal mass added by the extra grains?

I'm leaning towards b.

Oh, this is probably obvious, but I'm batch sparging.

Thanks!

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Old 03-08-2008, 01:22 PM   #2
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The water to grain ratio (I like 1qt/lb) will stay the same and promash should tell you how much and what temp.

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Old 03-08-2008, 01:35 PM   #3
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you'll want the extra water to help get the sugars out of the extra grain.

Somebody with more knowledge than me can chime in on the water to grain ratio. Most of the books suggest anywhere from 1qt/lb - 1.5qt/lb. With most brewers using the middle number of 1.25qt/lb. Generally speaking you want about an inch or so of water on top of the grain bed during the mash.

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Old 03-08-2008, 02:24 PM   #4
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OK thanks very much! More water it is! I'll keep the ratio at 1.25qt/lb

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