I've been following directions on two all grain brews now, and both times got low efficiency.
I am mashing in a lauter tun (a ten gallon rubermaid). I keep getting the right temperatures in the tun (152F). I leave it in to mash for 60 minutes. Then I do a batch sparge and leave that in for 20 minutes before draining the sparge as well.
The ammount of water I use is per BeerSmith2. And both times I got close to my 5.5 gallons.
So am I missing something? Why am I not getting high efficiency? Any help would be greatly appreciated.
My recent efficiency was 56%