Whole Hop Absorption - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Recipes/Ingredients > Whole Hop Absorption

Reply
 
Thread Tools
Old 11-15-2006, 05:18 PM   #1
Walker
I use secondaries. :p
HBT_LIFETIMESUPPORTER.png
 
Walker's Avatar
Recipes 
 
Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts



I searched here already, and found a few leads, but they all ended up taking me nowhere.

Does anyone have any ball-park figures for the amount of wort absorbed by whole hops?

-walker
__________________
Ground Fault Brewing Co.

 
Reply With Quote
Old 11-15-2006, 05:43 PM   #2
ayrton
 
ayrton's Avatar
Recipes 
 
Aug 2006
South Jersey
Posts: 809
Liked 2 Times on 2 Posts


I am actually interested in knowing this as well, as I have a few ounces of whole hops that I picked myself back in September sitting in my fridge, and it sounds like people are losing valuable wort.
__________________
Primary 1: None
Primary 2: None
Secondary 1: None
Conditioning: None
Drinking: None (!)
Recently Kicked: None
Up Next: Beats me!

 
Reply With Quote
Old 11-15-2006, 05:44 PM   #3
homebrewer_99
 
homebrewer_99's Avatar
Recipes 
 
Feb 2005
Atkinson (near the Quad Cities), IL
Posts: 17,792
Liked 132 Times on 99 Posts


I usually sparge them anyway...as I pour my wort into the primary.
__________________
HB Bill

 
Reply With Quote
Old 11-15-2006, 06:17 PM   #4
Walker
I use secondaries. :p
HBT_LIFETIMESUPPORTER.png
 
Walker's Avatar
Recipes 
 
Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts


The closest thing I found to a real number (on this forum) was from david_42 who estimated that someone should throw in "a couple extra quarts of water" to account for absorption of a 3.75 oz of whole hops.

So... that number comes to (fudging things) 0.5 quarts/oz.

In another post, someone declared that they only lose "at mose a couple of cups" of liquid to hops absorption, but they never said how many oz of hops they typically use.

0.5 qt/oz seems maybe a bit high, but not totally unreasonable, but I would love to find someone who actually has some emperical data.

-walker
__________________
Ground Fault Brewing Co.

 
Reply With Quote
Old 11-16-2006, 12:24 AM   #5
Baron von BeeGee
Beer Bully
HBT_LIFETIMESUPPORTER.png
 
Baron von BeeGee's Avatar
Recipes 
 
Jul 2005
Barony of Fuquay-Varina, NC
Posts: 5,397
Liked 23 Times on 22 Posts


I don't really know...I guess Promash doesn't take this into account? Probably not...actually I think it goes in the Brew Session "Water Needed" page under "other absorption".

I'm curious, as well.

 
Reply With Quote
Old 11-16-2006, 12:36 AM   #6
ajf
Senior Member
HBT_LIFETIMESUPPORTER.png
 
ajf's Avatar
Recipes 
 
Oct 2005
Long Island
Posts: 4,646
Liked 105 Times on 99 Posts


4 oz whole hops absorbed 48 oz wort when I measured this a few months ago.

I weighed the kettle after racking to fermenter on the kitchen scales (accurate to within two ounces), I then cleaned the kettle, and drained some water with the kettle tilted to the same angle as it was when I racked, and re-weighed.
The clean kettle weighed 52 ounces less, but I had added 4 ounces of hops during the boil.

-a.

 
Reply With Quote
Old 11-16-2006, 12:39 AM   #7
Snippity
Guest
Recipes 
 
Posts: n/a

I squeeze my hops to get the wort back. I do the same with the grains.

 
Reply With Quote
Old 11-16-2006, 01:26 AM   #8
Yuri_Rage
Gritty.
HBT_MODERATOR.png
 
Yuri_Rage's Avatar
Recipes 
 
Jul 2006
Southwest
Posts: 14,289
Liked 808 Times on 512 Posts


Quote:
Originally Posted by Snippity
I squeeze my hops to get the wort back. I do the same with the grains.
I'm not sure that either of these are good practices. I'm almost positive that squeezing the grains is a bad thing - manual tannin extraction...blech!
__________________
Homebrewed Blog..........YouTube Channel .......... Shirts, posters, etc

 
Reply With Quote
Old 11-16-2006, 03:06 AM   #9
Walker
I use secondaries. :p
HBT_LIFETIMESUPPORTER.png
 
Walker's Avatar
Recipes 
 
Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts


Quote:
Originally Posted by ajf
4 oz whole hops absorbed 48 oz wort when I measured this a few months ago.

I weighed the kettle after racking to fermenter on the kitchen scales (accurate to within two ounces), I then cleaned the kettle, and drained some water with the kettle tilted to the same angle as it was when I racked, and re-weighed.
The clean kettle weighed 52 ounces less, but I had added 4 ounces of hops during the boil.

-a.
awesome info! thanks.

this is lining up with other info I have dug up after an evening of google pounding.

It seems to be anywhere from 0.25 to 0.5 quart/oz, which has a mean value of 0.375. A few references said "1/3 quart", and I even saw a couple of direct "3/8 quart" and "3/4 pint" quotes (0.375).

Now... your data comes out as 0.375 qt/oz.

Who do we contact to make this official? Papazian? Palmer?

-walker
__________________
Ground Fault Brewing Co.

 
Reply With Quote
Old 11-16-2006, 03:10 AM   #10
Baron von BeeGee
Beer Bully
HBT_LIFETIMESUPPORTER.png
 
Baron von BeeGee's Avatar
Recipes 
 
Jul 2005
Barony of Fuquay-Varina, NC
Posts: 5,397
Liked 23 Times on 22 Posts


Well, this is going to make me modify my water needed chart...


 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Whole Hop Absorption uwmgdman General Techniques 8 04-22-2011 11:37 PM
grain absorption? Thor the Mighty All Grain & Partial Mash Brewing 5 06-02-2009 10:24 PM
Hop absorption & possible reuse? psymn All Grain & Partial Mash Brewing 2 03-17-2008 01:53 PM
Leaky Keg or CO2 Absorption? MriswitH Bottling/Kegging 8 02-28-2007 02:50 PM
Leaf Hop Absorption captaineriv Recipes/Ingredients 15 03-20-2006 03:00 PM


Forum Jump