I im making a Marzen using the enhanced double decoction schedule. I hit all my temps, 97, 133, 151, 170. I start the pump to start recirculating at the mahout temp and it slows then gets stuck! After playing around with pump speed, raising the temp a little, stirring the mash, I give up and end up with a kettle full of cloudy wort.
At the end of the day I have 82% efficiency, so should be fine, but how do I avoid this stuck sparge in the future? When I finally drained all the wort out of the mash, I had a thick layer of proteins on top of the grain, which I assume was a major contributor.
Hopefully all the crap in the boil kettle doesn't hurt too much.