I forgot to take an original gravity reading - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > I forgot to take an original gravity reading

Reply
 
Thread Tools
Old 03-19-2008, 11:06 PM   #1
FabilaJ
Recipes 
 
Mar 2008
Sacramento, CA
Posts: 9


I forgot to take an original gravity reading, so after about 2 days I took a reading. How much does the specific gravity change after 48 hours? (approximately of course, and my airlock was bubbling pretty hardcore.) Thanks!
Oh and after about 8 days there was a change of.025 dunno if that helps with the calculation...

 
Reply With Quote
Old 03-19-2008, 11:08 PM   #2
Fingers
HBT_SUPPORTER.png
 
Fingers's Avatar
Recipes 
 
Jan 2007
Lac du Bonnet, Manitoba
Posts: 4,216
Liked 45 Times on 36 Posts


That's a really hard question to answer. It depends on your recipe, your yeast, and your temperature. Often a beer will be pretty much finished fermenting after two days. If your brew was an extract version, you can predict your OG fairly accurately. If it was AG or partial mash, we may never know.
__________________
If you can't fix it with a hammer, you've got an electrical problem.

 
Reply With Quote
Old 03-19-2008, 11:42 PM   #3
FabilaJ
Recipes 
 
Mar 2008
Sacramento, CA
Posts: 9

Ahh, well I figured it was a long shot. It was an extract kit that I augmented with a couple lbs of grain. I feel really stupid because part of my experiment was to see how much alc/vol would be added to the beer if I used an extra 2 lbs of grain. Anyway, there is always next time!

 
Reply With Quote
Old 03-19-2008, 11:44 PM   #4
david_42
 
david_42's Avatar
Recipes 
 
Oct 2005
Willamina & Oak Grove, Oregon, USA
Posts: 25,593
Liked 151 Times on 142 Posts


You can calculate what it should have been, but without knowing your mash efficiency it would just be a guess.
__________________
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

 
Reply With Quote
Old 03-19-2008, 11:57 PM   #5
DeathBrewer
Maniacally Malty
HBT_LIFETIMESUPPORTER.png
 
DeathBrewer's Avatar
Recipes 
 
Apr 2007
Oakland, CA
Posts: 21,790
Liked 261 Times on 134 Posts


well...what was the recipe and what was the type of grain with the added 2 lbs?
__________________
Easy Partial Mash Brewing - Stovetop All-Grain Brewing

"Death is always with us." - Brewpastor

Quote:
DIAICYLF
We will remember...

 
Reply With Quote
Old 03-20-2008, 01:03 AM   #6
Funkenjaeger
 
Funkenjaeger's Avatar
Recipes 
 
May 2007
Nashua, NH
Posts: 1,598
Liked 9 Times on 7 Posts


Quote:
Originally Posted by FabilaJ
part of my experiment was to see how much alc/vol would be added to the beer if I used an extra 2 lbs of grain
So just use some brewing software - you can answer that question in a matter of minutes.

Assuming you are merely STEEPING grains, and not doing a mini mash, you are not likely to be affecting your ABV significantly (or at all) however - generally steeping grains are for adding character (body, mouthfeel, color, flavor), not fermentables, as a basic steep won't convert starches. If you want to tweak the ABV you should either tweak the extract amounts, or look into partial mashing.

 
Reply With Quote
Old 03-20-2008, 01:17 AM   #7
ohiobrewtus
 
ohiobrewtus's Avatar
Recipes 
 
Nov 2006
Ohio
Posts: 7,785
Liked 62 Times on 54 Posts


Agreed, if you steeped the grains the impact on your abv would have been very little.

RDWHAHB and make sure to take a gravity reading next time. Live and learn.
__________________
Quote:
Originally Posted by the_bird
Well, if you *love* it.... again, note that my A.S.S. has five pounds.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
took original gravity reading @80 deg hydrometer help? bieb9er Extract Brewing 3 08-31-2009 02:08 AM
Original Gravity Reading is Off deion528 Beginners Beer Brewing Forum 4 01-24-2009 03:21 PM
Forgot to take Original Gravity shamukaiser Beginners Beer Brewing Forum 6 11-05-2007 02:04 PM
forgot to take the gravity reading....stout uglygoat All Grain & Partial Mash Brewing 5 07-10-2007 02:21 AM
High Original Gravity Reading 9999USMC Beginners Beer Brewing Forum 10 05-20-2007 02:28 PM


Forum Jump