I mash in an igloo cooler and have never mashed out before but now understand the benefits. How much 200 degree water is needed to bring 3 gallons of 152 degrees water up to 167? Thanks for anyone that has a formula.
search around a bit there is a calculator that I have found in the past that has this formula on it.
you need to tell us the total volume of water and the pounds of grain. http://www.howtobrew.com/section3/chapter16-3.html
contains the equations to calculate both strike and infusion water temps and volumes.