Since publishing the original Mash & Boil manual, we have found that using less strike water per pound of grain, atlhough it results in a chunkier mash, gives a substantially higher efficiency. For the most extract per pound of crushed grain, we are now recommended .30 gallons of strike water per pound instead of .37 gallons of strike water per pound. Our latest 5 gallon test batch of February 17th, 2017 for a Black IPA featuring the following grain bill: • 6.75 lbs. of Castl