*Ss Brewing Technologies Giveaway - Enter Now!*

Home Brew Forums > Home Brewing Beer > Extract Brewing > Full boil on a extract batch
Reply
 
LinkBack Thread Tools
Old 02-14-2013, 06:01 PM   #1
steber
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2011
Location: Kingston, Pennsylvania
Posts: 295
Liked 14 Times on 13 Posts
Likes Given: 6

Default Full boil on a extract batch

So I've searched this topic and i'm finding very incosiestent results. I have a brewers best american cream ale kit laying around and I figured I'd brew up a extract kit instead of breaking out all the AG gear since my schedule is busy.

Since I have the equipment I'd like to do a full boil for better hop utlization and less harshness in the malt. Is there a formula to cut back the hops to get the same IBUs? Also, do I follow the LME, DME, dextrose additions per receipe or adjust that too?

Heres the ingredients

BOIL SIZE: 2.5

FERMENTABLES
3.3 lb. Extra Light LME 60 min
2.0 lb. Pilsen DME 20 min
1 lb. Corn Sugar 20 min


HOPS
1.25 oz. willamette Bittering 60 min
1 oz. willamette Aroma 10 min

Top off to 5 Gallons
--------------------------------------------------------------


As stated above I want to do a 5 gallon boil, not the 2.5 gallon.

__________________
Quote:
This is grain, which any fool can eat, but for which the Lord intended a more divine means of consumption... Beer!
steber is offline
 
Reply With Quote Quick reply to this message
Old 02-14-2013, 06:14 PM   #2
Yooper
Ale's What Cures You!
HBT_ADMIN.png
Feedback Score: 0 reviews
 
Yooper's Avatar
Recipes 
 
Join Date: Jun 2006
Location: Upper Michigan
Posts: 61,199
Liked 4505 Times on 3276 Posts
Likes Given: 883

Default

You don't need to adjust the hops, really. But you could if the bittering hops you have are a higher AAU than you want for your bittering.

It used to be thought that hops utilization was impacted by wort gravity, but it's been proven wrong. What does impact the IBUs, though is "topping off". So, if you have 2.5 gallons of 50 IBU wort, and add 2.5 gallons of water (0 IBUs) the IBUs will be halved.

For a cream ale, I'd probably target 15-20 IBUs, so 1.25 ounce of bittering hops may be too much for either a full boil OR a partial boil, depending on the hops.

__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006
Yooper is online now
 
Reply With Quote Quick reply to this message
Old 02-14-2013, 06:27 PM   #3
steber
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2011
Location: Kingston, Pennsylvania
Posts: 295
Liked 14 Times on 13 Posts
Likes Given: 6

Default

Oh, I'm sorry I just realised I didnt mention that. They are both willamette additons. Just to add, they receipe shown is for a 2.5 gallon boil. Which I want to do a 5 gallon boil with. So essentially, by the logic given, I should half my hop additions on a full boil since the IBUS would be havled if i were to follow the directions?

If gravity doesn't matter, I suppose I could just use beer smith as if I were doing a AG batch, just to see what IBU range I'm in?

__________________
Quote:
This is grain, which any fool can eat, but for which the Lord intended a more divine means of consumption... Beer!
steber is offline
 
Reply With Quote Quick reply to this message
Old 02-14-2013, 07:02 PM   #4
VampireSix
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2013
Posts: 71
Liked 2 Times on 2 Posts
Likes Given: 1

Default

Quote:
Originally Posted by Yooper View Post
It used to be thought that hops utilization was impacted by wort gravity, but it's been proven wrong.
When did this happen? I was under the impression that adding only some extract at the beginning of a partial boil would help boost IBUs to compensate for the top-off water.
__________________
VampireSix is offline
 
Reply With Quote Quick reply to this message
Old 02-14-2013, 07:21 PM   #5
Weezy
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Weezy's Avatar
Recipes 
 
Join Date: Jan 2013
Location: Pittsburgh, PA
Posts: 1,198
Liked 165 Times on 123 Posts
Likes Given: 109

Default

info on hop utilization is here:
http://www.howtobrew.com/section1/chapter5-5.html

[deleted misinformation...sorry for confusion!!]

__________________
Weezy is offline
 
Reply With Quote Quick reply to this message
Old 02-14-2013, 07:59 PM   #6
VampireSix
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2013
Posts: 71
Liked 2 Times on 2 Posts
Likes Given: 1

Default

Quote from the section of Palmer's book that you linked:

As you will see in the next section, hop utilization decreases with increasing wort gravity. The higher concentration of sugars makes it more difficult for the isomerized alpha acids to dissolve.

So, the more watery (as far as gravity goes) the boil, the BETTER the hop utilization.

__________________
VampireSix is offline
 
Reply With Quote Quick reply to this message
Old 02-14-2013, 08:07 PM   #7
steber
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2011
Location: Kingston, Pennsylvania
Posts: 295
Liked 14 Times on 13 Posts
Likes Given: 6

Default

And yet again as stated before the confusion and contradicting answers continue.. more over, my dilemma also is that I'm adding fermentables at different times.. my gravity from 60-20 is different from 20-flameout. Not to mention boil off rate which will constantly change the gravity as well.

__________________
Quote:
This is grain, which any fool can eat, but for which the Lord intended a more divine means of consumption... Beer!
steber is offline
 
Reply With Quote Quick reply to this message
Old 02-14-2013, 10:51 PM   #8
Adrenaline-Junkie
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2012
Posts: 153
Liked 12 Times on 10 Posts

Default

To be honest its getting way over thought in my opinion.

__________________
Adrenaline-Junkie is offline
 
Reply With Quote Quick reply to this message
Old 02-14-2013, 11:00 PM   #9
steber
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2011
Location: Kingston, Pennsylvania
Posts: 295
Liked 14 Times on 13 Posts
Likes Given: 6

Default

Quote:
Originally Posted by Adrenaline-Junkie View Post
To be honest its getting way over thought in my opinion.
Agreed, have a simplistic answer? Is it as easy to just say half the hops if doing a full boil instead of topping off?
__________________
Quote:
This is grain, which any fool can eat, but for which the Lord intended a more divine means of consumption... Beer!
steber is offline
 
Reply With Quote Quick reply to this message
Old 02-15-2013, 12:09 AM   #10
Yooper
Ale's What Cures You!
HBT_ADMIN.png
Feedback Score: 0 reviews
 
Yooper's Avatar
Recipes 
 
Join Date: Jun 2006
Location: Upper Michigan
Posts: 61,199
Liked 4505 Times on 3276 Posts
Likes Given: 883

Default

Quote:
Originally Posted by VampireSix View Post
Quote from the section of Palmer's book that you linked:

As you will see in the next section, hop utilization decreases with increasing wort gravity. The higher concentration of sugars makes it more difficult for the isomerized alpha acids to dissolve.

So, the more watery (as far as gravity goes) the boil, the BETTER the hop utilization.
His book is outdated. In about 2008, he came out and said he "got it wrong' in How to Brew, and that he knows that utilization is indeed independent of wort gravity. There are more updated podcasts and writings by Palmer concerning this.


Quote:
Originally Posted by steber View Post
Agreed, have a simplistic answer? Is it as easy to just say half the hops if doing a full boil instead of topping off?
No. Reduce them by 20% if you feel you have to do something, otherwise don't adjust.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006
Yooper is online now
steber Likes This 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
full boil small batch vs partial boil larger batch? bfinleyui All Grain & Partial Mash Brewing 30 12-13-2012 05:23 PM
half batch full boil same as full batch partial boil? Firechicken Beginners Beer Brewing Forum 5 10-15-2012 09:53 PM
Full Boil Extract Boil with question on batch volumes tjashing Extract Brewing 11 05-02-2012 03:19 PM
Extract Full Split Boil vs Large Boil with Top Off robanna Beginners Beer Brewing Forum 6 04-20-2012 04:41 PM
extract partial boil to full boil questions... smithnick0 Beginners Beer Brewing Forum 17 04-25-2011 09:46 PM