- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
re: Homebrewing: Brewing in process thread (with pics)
Posted on 3/6/13 at 10:43 am to BugAC
Posted on 3/6/13 at 10:43 am to BugAC
quote:
Mash efficiency is your pre-boil SG measured agaisnt percent of fermentable sugars from the grain. Basically, how well you extracted sugars from the grain.
Brewhouse efficiency takes into account mash eff + the effects of the post-boil wort. So since i was left with only 4.5 gallons instead of 5, i did not get a great brewhouse efficiency. It also takes into effect other things such as Pre ferm. OG, and other factors i'm not sure of. If i would have ended up with 5 gallons, i would have had a brewhouse eff of about 72%.
Basically Frat, it's what you were talking about earlier in the thread. My mash was conducted properly, i just had too much evaporation in my boil. I should have collected about .75 gallons more wort, which might have reduced my mash efficiency, but i don't know.
Calculating a brewhouse efficiency seems dumb to me. There is nothing to compare it to. You either get the appropriate amount of sugar out of your grain or you dont. If you end up with less wort but the right OG then you didnt pull out enough sugars. If you end up with 5 gallons but a higher OG then you pulled out more than you expected. It all goes back to your mash efficiency. The only thing the boil does is concentrate what you already have.
3
Posted on 3/6/13 at 10:57 am to Fratastic423
quote:
You either get the appropriate amount of sugar out of your grain or you don't.
I tried to adjust for my inefficiencies the last batch we brewed by adding 1 lb extra base malt and STILL missed the gravity...
Didn't use 5.2 on that mash but I think I'm not getting the sparge water up high enough to get the grain bed up to 170. Beersmith doesn't account for that and only tells you to add x gals at 170 which DOES NOT get the grain bed up to 170.
Posted on 3/6/13 at 10:59 am to Fratastic423
quote:
Calculating a brewhouse efficiency seems dumb to me
brewhouse efficiency is more important for commercial brewers than homebrewers.
brewhouse efficiency is the total potential of the grain used vs what ends up in the fermentation vessel. Your brewhouse efficiency takes into account both mash efficiency and loses of wort to equipment along the way to the fermentation vessel.
In a batch of commercial beer using 2000 lbs of grain; the difference between an efficiency 68% and 75% (arbitrary numbers) is about 140 lbs of grain...
This post was edited on 3/6/13 at 11:00 am
Posted on 3/6/13 at 11:07 am to Fratastic423
quote:
You either get the appropriate amount of sugar out of your grain or you dont. If you end up with less wort but the right OG then you didnt pull out enough sugars. If you end up with 5 gallons but a higher OG then you pulled out more than you expected
But if my evaporation rate is much less, then my mash efficiency hasn't changed.
I've done hand calculations and beersmith. Mash efficiency is calculated pre-boil. I don't think my post-boil volume has anything to do with mash efficiency. I guess i won't be sure until my next brew, of how volume effects mash efficiency.
Page 1 of 1
Popular
Back to top
Follow TigerDroppings for LSU Football News