Rolling boil vs. regular boil - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Rolling boil vs. regular boil

Reply
 
Thread Tools
Old 11-18-2009, 12:29 AM   #1
DavidSteel
Recipes 
 
Oct 2009
IL
Posts: 1,068
Liked 7 Times on 7 Posts



I was wondering what a rolling boil achieves that a regular boil doesn't.

I'm using a 7.5 gallon turkey fryer (aluminum) on a stove top.

Will boiling an additional 15-30 minutes make up for what a rolling boil does to the beer?

Is there another way to make up for it, such as stirring frequently?

Thanks in advance




 
Reply With Quote
Old 11-18-2009, 12:48 AM   #2
Kauai_Kahuna
Recipes 
 
May 2008
Hawaii
Posts: 2,274
Liked 9 Times on 9 Posts


A boil is a boil as far as I'm concerned for hops, wort, etc.
A roiling boil allows for more surface contact to allow for faster evaporation is the only difference I know of.


__________________
---
In Primary: Belgium Chimay clones.
In Secondary: Braggot, pale ale, end of the world white.
Conditioning: Mead, Cider, braggot, Belgium Wheat.
On Tap: Clones, Chimay Blue, Red, Porter, malted cider.
Bottles: Far, far, too many to list.

 
Reply With Quote
Old 11-18-2009, 12:52 AM   #3
Revvy
Post Hoc Ergo Propter Hoc
HBT_LIFETIMESUPPORTER.png
 
Revvy's Avatar
Recipes 
 
Dec 2007
"Detroitish" Michigan
Posts: 40,921
Liked 3180 Times on 1881 Posts


A wise brewer once told me, "a boil is a boil." If you get it to 212 (or whatever it is based on your elevation) and it is bubbling, then you are golden.
__________________
Like my snazzy new avatar? Get Sons of Zymurgy swag, here, and brew with the best.

Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman

I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew

 
Reply With Quote
Old 11-18-2009, 12:52 AM   #4
Hoosier
Recipes 
 
Aug 2008
Porter, Indiana
Posts: 193
Liked 2 Times on 2 Posts


A rolling boil is all that is needed. You don't need the wort leaping out of the kettle during your boil. Actually a very hard boil will cause more melanoidin formation and potentially throw off the intended flavor of your beer. You need convection not a tsunami.
__________________
Proud supporter of Brett, Lacto, Pedio and all the other critters your brewing friends warn you about.
www.thebrewingnetwork.com

 
Reply With Quote
Old 11-18-2009, 12:52 AM   #5
The Pol
Recipes 
 
Feb 2007
Posts: 11,454
Liked 96 Times on 81 Posts


The boil does so much more than just evaporate water:

Hop Utilization
Precipitates protiens
Improves head formation
Drives off DMS

Etc...

This is sort of like asking, "can I get a ticket for driving fast?"

How fast is fast? What is the speed limit? Some things have to be quantified.


 
Reply With Quote
Old 11-18-2009, 12:53 AM   #6
GoldMiner
Recipes 
 
Aug 2009
Fredericksburg, Virginia
Posts: 584
Liked 20 Times on 18 Posts


I believe a rolling boil may aid in making clearer beers.

Pretty sure that was mentioned in the Brewstrong Podcast on Chill Haze.

It's also fun to watch a rolling boil.

 
Reply With Quote
Old 11-18-2009, 02:57 PM   #7
DavidSteel
Recipes 
 
Oct 2009
IL
Posts: 1,068
Liked 7 Times on 7 Posts


I'm guessing it helps break down proteins and the like, but can one get closer to what a rolling boil does by string vigorously?

 
Reply With Quote
Old 11-18-2009, 03:01 PM   #8
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,010
Liked 7602 Times on 5351 Posts


Quote:
Originally Posted by DavidSteel View Post
I'm guessing it helps break down proteins and the like, but can one get closer to what a rolling boil does by string vigorously?
Boiling is boiling- when the big bubbles roll over and break and do it again. Anything less is a simmer- not a boil. A boil is required to do those things the Pol listed.

So, no, you won't get the same results with stirring or anything less than a boil.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

 
Reply With Quote
Old 11-18-2009, 11:39 PM   #9
boredatwork
Recipes 
 
Dec 2008
Sunnyvale, CA
Posts: 279
Liked 7 Times on 7 Posts


There was a discussion regarding the concept of "boiling" on a brew strong show. I remember the conclusion was that as long as the surface of the water is moving, then you are boiling.

Aside from melanoidin formation etc (actually, I just remember that it was the melanoidin Brew Strong where I heard the above discussion...), the more you boil the more you evaporate and waste propane (if your using a burner). For a while I was turning my burner up to max and the thing was boiling away like crazy - and my evaporation rates were about double what is considered normal. In the end an overly zealous boil is nothing more than a wasteful inconvenience.



 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is it ok to not have a rolling boil? NitrouStang96 Beginners Beer Brewing Forum 12 10-01-2009 07:14 PM
Rolling Boil DaanMuller All Grain & Partial Mash Brewing 2 09-17-2009 03:52 AM
Can't reach rolling boil, is that bad? HalloweenGod Beginners Beer Brewing Forum 14 01-16-2009 09:14 PM
No Rolling Boil hoplobster All Grain & Partial Mash Brewing 5 02-21-2008 02:20 AM
Rolling Boil on Wort. Orfy All Grain & Partial Mash Brewing 32 02-18-2006 05:36 PM


Forum Jump