Spike Brewing 12.5 Conical Fermenter Giveaway!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Partial Boil Hop Utilization - Only for bittering?

Reply
 
LinkBack Thread Tools
Old 03-04-2011, 10:23 PM   #1
joetothemo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: Portland, OR
Posts: 452
Liked 10 Times on 10 Posts
Likes Given: 31

Default Partial Boil Hop Utilization - Only for bittering?

After making my eyes go crossed with various threads on this topic,
I am left with an unresolved question...

Does the partial boil scale-up only apply to the 60 min addition for bittering? Or should I scale up Aroma and Flavoring additions that occur later in the boil as well?

I am planning on doing Jamil's APA. His recipes call for a 7 gallon boil (5.5 actually making it into the fermenter) with the following additions:

0.67 oz Magnum [10.00 %] (60 min) Hops
0.25 oz Centennial [10.00 %] (10 min) Hops
0.25 oz Cascade [5.50 %] (10 min) Hops
0.50 oz Cascade [5.50 %] (0 min) Hops -
0.50 oz Centennial [10.00 %] (0 min) Hops -

However, because I am doing a 3.5 gallon boil (with 1lb LME/1 gallon)...
Then the remaining extract as a late addition...
Before finally topping off to 5.5 Gallons

I adjusted the schedule as follows:

1.25 oz Magnum [10.00 %] (60 min) Hops
0.50 oz Centennial [10.00 %] (10 min) Hops
0.25 oz Cascade [5.50 %] (10 min) Hops
0.25 oz Cascade [5.50 %] (0 min) Hops
0.50 oz Centennial [10.00 %] (0 min) Hops

In this case, I only scaled up my bittering hops..

Will I also need to scale up my 10 min and 0 min additions?

__________________


In Primary:
Amarillo Pale Ale
A Stout I brewed for a guy as a lesson

In Bottles:
Jamil's Belgian Tripel
Centennial Pale Ale

On Draft:
Imperial Red Ale

joetothemo is offline
 
Reply With Quote Quick reply to this message
Old 03-04-2011, 11:11 PM   #2
rescuedogrr2010
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Raleigh, North Carolina
Posts: 23
Default

i would adjust the 10 min addition according to tinseth's hop utilization table. that is a late flavor/aroma addition aimed to allow some alpha acids to isomerize but mainly add aroma.

__________________
rescuedogrr2010 is offline
 
Reply With Quote Quick reply to this message
Old 03-04-2011, 11:57 PM   #3
david_42
Feedback Score: 0 reviews
 
david_42's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Willamina & Oak Grove, Oregon, USA
Posts: 25,651
Liked 133 Times on 126 Posts

Default

I only adjust the bittering add. Extraction of the oils has little dependence on wort volume.

Just a note: the idea that high wort concentrations reduced bittering efficiency turns out to be wrong. The problem is the concentration of the bittering precursors themselves. Since homebrew bittering levels are often tied to gravity, it took real science to figure out what was happening.

__________________

Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"

"I would like to die on Mars, just not on impact." Elon Musk

david_42 is offline
 
Reply With Quote Quick reply to this message
Old 03-05-2011, 12:45 AM   #4
Fat_Bastard
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: central coast, california
Posts: 307
Liked 6 Times on 4 Posts
Likes Given: 2

Default

Quote:
Originally Posted by david_42 View Post

Just a note: the idea that high wort concentrations reduced bittering efficiency turns out to be wrong. The problem is the concentration of the bittering precursors themselves. Since homebrew bittering levels are often tied to gravity, it took real science to figure out what was happening.

...and this means what in english to the rest of us? (explain please)
__________________
Fat_Bastard is offline
 
Reply With Quote Quick reply to this message
Old 03-05-2011, 01:11 AM   #5
StittsvilleJames
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Stittsville, ON
Posts: 498
Liked 40 Times on 20 Posts
Likes Given: 8

Default

Quote:
Originally Posted by Fat_Bastard View Post
...and this means what in english to the rest of us? (explain please)
The white dots are winning...?
__________________
StittsvilleJames is offline
 
Reply With Quote Quick reply to this message
Old 03-05-2011, 02:31 AM   #6
rescuedogrr2010
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Raleigh, North Carolina
Posts: 23
Default

just pointing out that independent of boil gravity, a smaller boil results in lower hop utilization period.

hasnt refuted the idea that boil gravity affects hop utilization, but certainly makes the point that boil volume DOES affect your hop utilization.

amirite?

__________________
rescuedogrr2010 is offline
 
Reply With Quote Quick reply to this message
Old 03-05-2011, 02:47 AM   #7
Fat_Bastard
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2010
Location: central coast, california
Posts: 307
Liked 6 Times on 4 Posts
Likes Given: 2

Default

http://media.libsyn.com/media/basicbrewing/bbr03-04-10exp3.mp3
__________________
Fat_Bastard is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Boil Volume and Hop Utilization d32h9 Beginners Beer Brewing Forum 6 09-03-2010 05:14 PM
Partial Mash, you are my lilypad...Hop Utilization ? DizzyPants Beginners Beer Brewing Forum 10 03-07-2010 01:51 PM
Hop Utilization vs. Gravity of the Boil cwlodyka Beginners Beer Brewing Forum 1 07-08-2009 12:29 PM
Just a thought on concentrated boil hop utilization... bgough Beginners Beer Brewing Forum 9 03-04-2009 08:57 PM
Full Boil vs. Partial boil Hops utilization Grinder12000 Beginners Beer Brewing Forum 36 11-16-2008 01:50 PM