|
|
|
|
|
View previous topic :: View next topic |
Author |
Message |
KB
Joined: 06 Nov 2014 Posts: 334 Location: Virginia
Working on: Next brew
|
Link Posted: Sun Nov 19, 2017 3:33 pm Post subject: Uncovered boil |
|
|
I've always heard and read about the importance of an uncovered boil. Of course, an uncovered rapid boil leads to evaporation. The evaporation rate changes based on the time of the years, humidity in the air, etc.
Reading Gregory Noonan's "New Brewing Lager Beer" book on page 157 I read "Never boil for less than the prescribed time. The kettle may be partly covered for part of the boil to control evaporation, but he wort must be vigorously boiled, uncovered, for at least the final thirty minutes to drive off harsh, volatile kettle-hop and malt oils, sulphur compounds, ketones and esters."
Interested in input on the quote above. Only fully uncovering for the final 30 minutes would make the evaporation estimate more accurate than keeping uncovered for the whole 90 or 60 minute boil.
Thoughts?
Kraig
|
|
Back to top |
|
|
kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11121 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
|
Link Posted: Sun Nov 19, 2017 3:48 pm Post subject: |
|
|
Where do you brew Kraig? If you brew indoors you'll find that the boil off rate doesn't vary. (It doesn't for me). If you brew outdoors in your location which goes from cold to hot throughout the year (Manassas, VA) you'll find boil off rate does vary.
You will still get lots of boiloff even with the lid on as it'll push the lid up and escape.
While it's a highly debated subject, I like to have a nice long & hard boil. I find it (together with proper pH) helps with clarity and long term stability.
Feel free to try different ways yourself.
It will also most likely be beer dependant.
Kal
_________________ Our new shop with over 150 new products: shop.TheElectricBrewery.com
We ship worldwide and support our products and customers for life.
Purchasing through our affiliate links helps support our site at no extra cost to you. We thank you!
My basement/bar/brewery build 2.0
|
|
Back to top |
|
|
itsnotrequired
Joined: 15 Sep 2015 Posts: 177 Location: central wi
|
Link Posted: Mon Nov 20, 2017 2:12 pm Post subject: |
|
|
seeing as it is a lager book, i'm guessing a lot of german beers with pilsner malt? agreed you want adequate boil times with the cover off to drive off dms.
|
|
Back to top |
|
|
|
|
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You can download files in this forum
|
Forum powered by phpBB © phpBB Group
|
|