Well I messed up prob one of the easiest beers to make. I made a Hefe-Weizen today and as I usually do I did a full boil starting with 6 gallons of water. Maybe my boil wasn't rapid enough but after an hour I cooled and siphoned to my ferm bucket and I knew I was gonna be over, but not by 1/2 gallon. My OG was supposed to me 1.054ish but I got a reading of 1.048. My question is if the final gravity from the original recipe was 1.012 should i shoot for lower now by 6 points or will it not really go below the recipe FG? Just don't want any bottle bombs in the end. Thanx in advance.
Gerard
so you ended up with 5 and a half gallons at the end which put you over your FG? in the future... make sure to keep some dme laying around... you can always toss some more dme in at the end of the boil to raise your FG. Take a reading before you cool down your wort and at that temp the dme will mix in well. It's really hard to go off on an FG with extract unless you come up high on your water, which I think you did.___________________________________
-jess
Yea I was running low on propane so i didn't do as vigorous a boil as I usually do so I guess it didn't steam off enough water. I was low by .006 on my OG, I just made it today...supposed to have been 1.054 was 1.048 so it was diluted some by like I said about 1/2 gallon. Recipe calls for 1 1/4 cup DME for priming will that add something to the abv or final taste?
Gerard
Since the attenuation of the wort remains constant when you change the OG (in realistic bounds of course), the new FG can be determined by this formula:
(anticipated OG - 1) / (actual OG - 1) = (anticipated FG - 1) / (actual FG -1)
actual FG = ((anticipated FG -1) * (actual OG -1) / (aniticipated OG -1)) + 1
for your example:
actual FG = (0.012 * 0.048 / 0.054) + 1 = 1.011
This is not much different from 1.012 and should affect the taste by much.
KaiBrauKaiser.com - brewing science blog - Follow me on Twitter - water and mash chemistry calculator
[/quote]
Since the attenuation of the wort remains constant when you change the OG (in realistic bounds of course), the new FG can be determined by this formula:
(anticipated OG - 1) / (actual OG - 1) = (anticipated FG - 1) / (actual FG -1)
actual FG = ((anticipated FG -1) * (actual OG -1) / (aniticipated OG -1)) + 1
for your example:
actual FG = (0.012 * 0.048 / 0.054) + 1 = 1.011
This is not much different from 1.012 and should affect the taste by much.
Kai[/quote]
So that formula is a constant even with .006 point difference in the OG reading? I need to get a good book on formulas and brush up an my math a bit. Any suggestions on books with formulas like this one for beer formulas? I'm no math genius so no calculus please...lol.
Gerard
So that formula is a constant even with .006 point difference in the OG reading? I need to get a good book on formulas and brush up an my math a bit. Any suggestions on books with formulas like this one for beer formulas? I'm no math genius so no calculus please...lol.
Buy Ray Daniels' Designing Great Beers. After reading it you'll wonder how you ever brewed without it.
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Post time 2006-6-15 11:10:00
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