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All Grain Brewing / Another sour mash question water/grain ratio?
« on: May 27, 2011, 06:41:23 AM »
I decided (at least for the moment ) to just mash all the grains in my 5 gallon cooler for 24 hours for the sour mash.
My grain bill is 7.75 lbs and I need a total of 7 gallons water for the mash and the sparge.
Usually I just split my total water volume half for the mash and half for the sparge.
If I do that in this case I use 3.5 gallons of mash water which is 1.8 quarts per lb. which will leave me with about 1.75 gallons of head space in the mash tun. Everything I have read says to fill to the top when sour mashing to minimize exposure to air.
If I used 4.25 gallons of mash water @ 2.2 quarts per lb it would pretty much leave no headspace in the mash tun but then I would only need 2.75 gallons for the sparge which might hurt my efficiency.
So I guess what I am trying to figure out is which is better a thin mash with less sparge water or risk the exposure to oxygen with a thicker mash and equal volumes of mash and sparge water?
Or am I once again way over complicating things.
My grain bill is 7.75 lbs and I need a total of 7 gallons water for the mash and the sparge.
Usually I just split my total water volume half for the mash and half for the sparge.
If I do that in this case I use 3.5 gallons of mash water which is 1.8 quarts per lb. which will leave me with about 1.75 gallons of head space in the mash tun. Everything I have read says to fill to the top when sour mashing to minimize exposure to air.
If I used 4.25 gallons of mash water @ 2.2 quarts per lb it would pretty much leave no headspace in the mash tun but then I would only need 2.75 gallons for the sparge which might hurt my efficiency.
So I guess what I am trying to figure out is which is better a thin mash with less sparge water or risk the exposure to oxygen with a thicker mash and equal volumes of mash and sparge water?
Or am I once again way over complicating things.


