Do you mind sharing you water to grain ratio for your mash? My mash efficiency was 72% (14 lbs of two row with 1.050 as a pre-boil OG collecting 7.5 gal wort collected) on my last batch and I am trying to decide what to change first, my mill gap (crush looks ok, but I am an all grain noob) or use a thinner mash (been using 1.250 quarts/lb)… I got the calculation from how to brew ( 37 x grain / volume = points; preboil og/ points = mash eff.) Am I doing this calculation right? I am batch sparging in a 70 quart cooler with a toliet braid.
If ya want to go down that “efficiency” road play with this. Troubleshooting Brewhouse Efficiency - German brewing and more.
There is a Efficiency troubleshooting spreadsheet under calculating efficiency that will guide ya in the direction. Personally i use 1.75qt/lb because thats what works best for my system, EHERMS .
A little trial and error also to what works best for you and your system. I use a copper manifold system in my mash cooler and have no problems with a finely milled grain. Good conversion managing my ph and temp at a range of 1.5-1.70qts/lb is my typical mash- depending on my recipe. With that im a solid mid 80’s efficiency- but Denny’s mark is on my radar and some tweaks and I might hit it someday.
I believe Denny means his lauter efficiency was 91%. Lauter * conversion= extraction efficiency. ~84% in this case. Denny???
72% is pretty good for a noob. Crush is where you can usually see a significant increase. A thinner mash could help with conversion, but will pale in comparison to crush. Definitely read through Braukaisers work.
I am really jealous. I haven’t brewed since mid-July because I am really trying to drink down my supply of homebrew so I can stop brewing beers that I don’t drink at their peak. I just started trying to play with harvesting yeast out of my spontaneously fermented beer so I have something brewing-related to do.
That’s a pretty big beer. At 72% you could be getting close to 100% conversion, depending on your lautering scheme. If this is a single batch sparge, you’d max out at ~77%. Thinning out the mash to equalize runnings would only bump that up to ~79%.
What was the mash pH? I don’t think crush is as big a deal as people make it out to be… Given a long (60 min) rest, any crush that gets all the kernels opened up is going to be serviceable.
I got 92% conversion according to Kai’s charts. After running off my sparge, I got 91% into the kettle. That would mean my lauter efficiency is something like 99%, I believe. And I completely agree that crush is the most important thing to look at for efficiency.
Which isn’t possible without a mash press (BIAB and squeezing the bag, at this scale). Without doing that, you have to lose some efficiency to the wort retained by the grist. I think you may have mathed wrong…