I converted a sanke keg into my mash tun but have had problems having a uniform mash temp (i.e. if my temp was to low, then I would turn on the burner, but this would cause the lower part to have a much higher temp than the top of the grain bed, even with lots of stirring). So I decided to purchase a march pump to help out with this issue and thought that I would recirculate my mash under low flame to lead to a more uniform temp. My question for yall, is what is the technique here? (e.g. I'm assuming you dont want to pump grain so do you vorlauf before pumping? do you open your ball valve on the outlet of the pump to match the rate coming out of the tun? How high of a vol/rate do you recirculate?)
Cheers!
Cheers!