siwelwerd wrote:Beerd Man wrote:As for the process: After the rest I pour in about a gallon of 170*F sparge water, gently stir the mash, let out about half a gallon, recirculate it through the top, open and drain (stirring occasionally) until I only see grain on the top of the mash. I then pour 170*F water over that, about 2 gallons, drain again until I see the water line has fallen below the bed of grain, and pour in the remaining 2 or so gallons, again stirring, until I've collected by boil volume. I usually end up with a gallon or so of extra water, but I'm getting a lot better at calculating the amount needed.
Should I be letting the water drain out completely before adding sparge water? Maybe recirculating more? Increase the sparge water temperature?
Yes, no, yes (for maximal efficiency). Try adding water at more like 180. It matters not what temp the sparge water is at, but what temperature (and pH) the grains are at. When you add a batch, stir it up, let it sit, and measure the temps in a few places. You'll quickly determine how hot sparge water you should be adding based on your system.
After I mash, I recirc, and drain before I add any sparge water. Then add 2-3 gallons of sparge water, stir, recirculate, and drain completely. Repeat. This nets 85% on an average batch with the above my square igloo cooler with a copper manifold.
Also, get your own mill. Buying the grains in bulk will pay for the mill in short time. Then you can be sure noone is resetting the gap and screwing with your crush.
+1
Also, are you doing a mash out? e.g. Mash @ 154, raising to 165-168, rest, then sparge
Or are you just sparging after a 150ish mash?
If the latter you're probably not even getting to mash out temps with your sparge water, let alone near the 170 threshold.
When you add that 170 sparge water, have you ever measured the output? Let's say you mashed out at 165. You add the 170 sparge water & the output is 168. Then you'll want to sparge with 172 next time. Measure again & take notes. Get that run off @ 170, not the water you add in there.
Getting your own mill is also a good idea for consistency. I'd highly recommend it unless the girl crushing the grain for you is cute. In your case, she's preggers so that part is probably moot.
Edit: Forgot to add 1 last thing. Too many people automatically blame the equipment, go out & spend hundreds of dollars trying various things that don't really do much of anything for them... but it still must be the equipment, right? Rig your process correctly & the equipment you're using pretty much doesn't matter. You can get 80-90% all day long on the weirdest, most cobbled together setup. It's all a matter of dialing you to it, not the other way around.