When to take OG reading? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Extract Brewing > When to take OG reading?

Reply
 
Thread Tools
Old 01-03-2008, 02:57 PM   #1
redneckbeagle
Recipes 
 
Oct 2007
Central KY
Posts: 161
Liked 1 Times on 1 Posts



When doing an 5 gal extract batch with the 1 1/2 to 2 gallon boil. Do you check the OG then (at end of the boil, with wort cooled) or after you have topped off with water in the fermenter?

 
Reply With Quote
Old 01-03-2008, 02:59 PM   #2
TheJadedDog
AFK ATM
HBT_LIFETIMESUPPORTER.png
 
TheJadedDog's Avatar
Recipes 
 
Aug 2006
People's Republic of Cambridge
Posts: 3,316
Liked 16 Times on 13 Posts


Take the OG reading after you have added the top-off water and mixed it well with the wort. I take my reading right before I pitch my yeast so everything is pretty much done at that point.

If you take the reading without the top-off water it will be ridiculously high.
__________________
And now we go AG!

On Tap: Nadda
Primary: Nadda
Planning: Extra Special Bitter

 
Reply With Quote
Old 01-03-2008, 03:00 PM   #3
Joker
 
Joker's Avatar
Recipes 
 
Nov 2007
Orygun
Posts: 1,953
Liked 32 Times on 29 Posts


And be sure to mix very well or your reading will not be accurate.

 
Reply With Quote
Old 01-03-2008, 03:03 PM   #4
Sea
Green Flash IPA on tap
HBT_LIFETIMESUPPORTER.png
 
Sea's Avatar
Recipes 
 
May 2007
Southern Oregon
Posts: 1,478
Liked 6 Times on 6 Posts


+1 on the mix VERY well. I don't even want to talk about how frustrating it was before I figured that out.

 
Reply With Quote
Old 01-03-2008, 03:05 PM   #5
redneckbeagle
Recipes 
 
Oct 2007
Central KY
Posts: 161
Liked 1 Times on 1 Posts


Thanks guys for the quick repsonse.

 
Reply With Quote
Old 01-03-2008, 03:18 PM   #6
FlyingHorse
Formerly Bike N Brew
HBT_LIFETIMESUPPORTER.png
 
FlyingHorse's Avatar
Recipes 
 
Mar 2007
Evanston IL
Posts: 1,856
Liked 11 Times on 10 Posts


Or, don't even bother.

It's darn near impossible to miss your OG on an extract brew, unless you forget some extract or your volumes are off.

If you didn't leave out any extract, and you're confident in your fermenter volume, your OG is what the recipe said it should be.

You'll have one more hydrometer-sample's worth of beer to taste AFTER the fermentation
__________________
No signature required.

 
Reply With Quote
Old 03-06-2011, 06:12 PM   #7
tnbrewer371
Recipes 
 
Mar 2010
Nashville, Tennessee, Tennessee
Posts: 292
Liked 1 Times on 1 Posts


Sort of a thread revival here but wondering if anyone had thoughts on how accurate your hydro reading will be if you take a gravity reading straight from the kettle right after I removed my chiller with no mixing yet?
__________________
Primary1: Cider 4
Primary2: Session XX Pale Ale
Primary3: Twonty Riy
Primary4: Dirty Southern Blonde

Corny1: Southern Blonde
Corny2: sierra madre pale ale (nb)

Bottled: A bunch of stuff

 
Reply With Quote
Old 03-06-2011, 06:23 PM   #8
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,219
Liked 7719 Times on 5422 Posts


Quote:
Originally Posted by tnbrewer371 View Post
Sort of a thread revival here but wondering if anyone had thoughts on how accurate your hydro reading will be if you take a gravity reading straight from the kettle right after I removed my chiller with no mixing yet?
It depends. If you are adding water afterwards, then of course the OG of the boiled wort would be very high and completely inaccurate. You also have to know the exact volume- not 3 gallons left, but 2.65 for example.

If you're doing a full boil with all of the wort, and you know the exact volume left in the kettle, it'll be highly accurate.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

 
Reply With Quote
Old 03-06-2011, 06:29 PM   #9
tnbrewer371
Recipes 
 
Mar 2010
Nashville, Tennessee, Tennessee
Posts: 292
Liked 1 Times on 1 Posts


Well that for sure answers my question, it was a full boiland actually was a litltle low on volume I think, bummer, thanks as always yooper. To be honest my og was dead on as planned for my efficiency I planned for but I was about a full gallon shy post boil, guess I didn't get the efficiency at all I had planned for. Oh well try again next time.
__________________
Primary1: Cider 4
Primary2: Session XX Pale Ale
Primary3: Twonty Riy
Primary4: Dirty Southern Blonde

Corny1: Southern Blonde
Corny2: sierra madre pale ale (nb)

Bottled: A bunch of stuff

 
Reply With Quote
Old 06-11-2012, 09:42 PM   #10
svdesign
Recipes 
 
Jun 2012
New York, NY
Posts: 1

I forgot to take the OG reading until after I aerated the wort and pitched the yeast. Will the reading still be accurate? I presume with more air in it, the density will be lighter than expected. Thanks

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
When do you take your OG reading? GroosBrewz All Grain & Partial Mash Brewing 15 01-05-2014 03:02 AM
Too low a FG reading? bdaddy Beginners Beer Brewing Forum 2 10-26-2009 03:19 AM
FG Reading skipdogchip General Beer Discussion 2 02-11-2008 05:37 PM
What would my MAX o.g. reading be? sTango Extract Brewing 9 12-21-2007 06:51 PM
when to take a sg reading gp125racer Beginners Beer Brewing Forum 8 08-28-2006 08:40 AM


Forum Jump