Mash-in Water ratio

[crbice]

hello im looking to brew with about 21.5 pounds of malt how much water should I mash-in with. what is a good equation to figure this out as well what amount of water should I use to sparge? Thank you

 

[duboman]

hello im looking to brew with about 21.5 pounds of malt how much water should I mash-in with. what is a good equation to figure this out as well what amount of water should I use to sparge? Thank you

1.25-1.5qts per lb to mash in
.12 gallons per lb will be lost to absorption
The amount to sparge will be your required pre-boil volume minus the volume of your first runnings

 

[bobeer]

+1 on duboman's comment. I usually do total grist lbs x 1.5 qt

 

[Onkel_Udo]

I use brewtoad to calculate it for me but there are a million sites and apps. This one:

http://www.brew365.com/mash_sparge_water_calculator.php

Says you should dough in 7.2 gallons at 168 F (this must be assuming a pre-heated mash tun). I tend toward a thinner mash when I have space for temperature consistency (larger thermal mass) so I would use 11 gallons at 164 F.

I of course am assuming a 10 gal batch at 155 F mash temp with either a mash-out and fly sparge ot a batch sparge.

 

[jflongo]

I personally always do 1.25 qt / lb.

 

[Calichusetts]

I like 1.5 as I like to do longer boils