Adjusting Hop Amount or Boil Time for Different Alpha Values - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Adjusting Hop Amount or Boil Time for Different Alpha Values
Cool Brewing Giveaway - Supporting Membership Drive & Discount

Reply
 
Thread Tools
Old 11-16-2012, 02:47 AM   #1
mgortel
Recipes 
 
May 2010
Stewartstown, PA
Posts: 861
Liked 48 Times on 37 Posts



Got a question here on IBU's adjustment for actual Hop ALpha values compared to recipe values......:

The hops I have are "German Tradition"....which are supposed to be the same (or very similar to Hallertau.

They have 6% Alpha......quite a bit higher than the 4-4.5% I was expecting for Hallertau.

The recipe calls for Hallertau....and of course the alpha values in my hops are significantly higher (percentage-wise)

Anyway, I know I can plug in the 6% value into Beersmith and adjust the boil time and/or amount of Hops to get in the Correct IBU range for my recipe.

So my question.......is it better to keep the same weight of hops and adjust the boil times for each hop addition or is it better to adjust the weight of hops and keep same boil times......OR does it not matter as long as I get the right IBU range and maintain the same ratio of bittering to aroma?


Any thoughts, opinions, experiences?

Thanks!


__________________
EVERYONE is entitled to my opinion!
Primary: None
Secondary: Chocolate milk Stout
Upcoming Brews: Dusseldorf Alt
Kegged: Biermuncher Centenniel Blonde

 
Reply With Quote
Old 11-16-2012, 02:49 AM   #2
jotakah
Recipes 
 
Aug 2011
Olympia, Washington
Posts: 250
Liked 13 Times on 10 Posts


Better to adjust hop weights and keep same boil times.



 
Reply With Quote
Old 11-16-2012, 03:02 AM   #3
BattleGoat
Recipes 
 
Jun 2011
Columbia, MD
Posts: 209
Liked 12 Times on 8 Posts


I have this same exact problem, only opposite - I need my hops to be 4.50% but I mistakenly grabbed a 3.80% package. So assuming the boil times are kept the same, how much would I adjust my hop weights (and in what configuration) to account for the different AA levels?

 
Reply With Quote
Old 11-16-2012, 11:12 AM   #4
Calichusetts
Recipes 
 
Nov 2011
Plymouth, MA
Posts: 2,990
Liked 490 Times on 293 Posts


An old school method would be to simply use HBUs (Homebrew bitterness unit).

Simply multiply the AA% by the amount. So if you are suppose to use .25 ounce of a hop at 5% you get 1.25 HBUs (5 x .25) Now, if your hops are 7% you do some reverse math and figure out that your formula looks like this:

7x = 1.25

Think back to the lovely days of middle school and you figure out that you need .178 ounces of hops. Hope this helps

 
Reply With Quote
Old 11-16-2012, 12:31 PM   #5
mgortel
Recipes 
 
May 2010
Stewartstown, PA
Posts: 861
Liked 48 Times on 37 Posts


Battlegoat.....what Calichussetts said is right on....but....I recommend you download Beersmith (it has a free 21 day trial for you to try it)......it is great....not just for the hop adjustment but for all aspects of designing your brew or making adjustments to variables.....it is only $20 I think if you decide you want to buy...

Just google BEERSMITH


__________________
EVERYONE is entitled to my opinion!
Primary: None
Secondary: Chocolate milk Stout
Upcoming Brews: Dusseldorf Alt
Kegged: Biermuncher Centenniel Blonde

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Adjusting amount of head from stout tap?> DustinHickey Bottling/Kegging 3 07-28-2010 06:53 PM
Amount to boil, and boil time sdufford Beginners Beer Brewing Forum 8 05-11-2010 10:12 PM
Adjusting for hop alpha acid rating ? wzup97 All Grain & Partial Mash Brewing 4 11-19-2009 09:06 PM
Beersmith - adjusting ingredient boil time nostalgia Brewing Software 3 03-20-2009 06:17 PM
Amount of Time from End Boil to Primary robnog General Techniques 13 01-14-2007 06:51 PM


Forum Jump