So after about 8 batches of All Grain, I continue to struggle with the amount of sparge water. Either I end up with too much in the kettle, or too little. When I get too much I seem to miss my OG too low. When I get too little, I have a smaller amount in the fermenter.
So I got to thinking, could it be as easy as this: Do the mash with whatever iSparge says to do, let’s say 13lbs grains, means apprx 4 gallons mash water. Drain it off, say I get 2 1/2 gallons of Wort. Then can I just assume that the grain has absorbed all the water it can, so now I just decide how much water I need to get me to a 6 1/2 gallon boil. so that means dropping in another 4 gallons, batch sparge, drain and I should basically get all 4 gallons out, right??