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Kettle Mashing Question

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ckpash88:
So I brewed on thanks giving with my new set. It's a direct fired Boilermaker with a pump to recirculate during mashing.

The problem I was having I think were really bad hotspots. I would read the Brewmometer on the side and it would dip to 140 degrees on the dial the. I would put a thermometer in the mash and it would say 160.

When the Brewmometer would say 140 I would put the heat on and stir then in a couple of minutes I would bring it up to 152 my target temp.

Should I be stirring the mash almost all the time and if so should I be running the pump to recirculate while doing this?


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bluesman:
Do you have a false bottom?

I use the Blichmann kettle for my RIMS. I heat/recirculate using a false bottom with a moderate flame (KAB4 burner) and get some temperature gradients in the tun, but usually +/-3 degrees during the heat/recirculate without stirring. Stirring the mash should only be necessary after the initial infusion and upon sparging.

How do you infuse and/or recirculate your mash liquor?

a10t2:
Have you calibrated the thermometers?

hopfenundmalz:
Sean has one obvious point, calibrate your instruments. I check the thermometers in my vessels vs the thermopen. The pH meter goes through a calibration with calibration solutions. Refractometer is checked with distilled water. And so on.

The pump return on my system is just the hose submerged under the wort. I give the mash a good stir to even out the temp.

ckpash88:
I calibrated my equipment before i started both of my thermometers and brewmometer are the same.

I also have a false bottom as well in my brew kettle.

I infuse the first step which was like (i am estimating i don't have my recipe in front of me) 4.25 gallons of 169 degree water to 13.5 pounds of grain. I then stirred for a moment to get it mixed up then turned on my pump to recirculate.

After about ten minutes i would have to stop the pump (if i didn't stop the pump i would lose prime and fight that for a while) and stir to get the heat distributed more evenly.

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