I know there are a lot of "First All Grain" posts, however I have some specific questions after this run.
I'm not going to obsess over my efficiencies in general, however for my first few all grain batches, I'm going to track them til we get mid-80's or low 90's.
My biggest question is more regarding something dumb that I did than technique (maybe thats the same thing).
I took my First runnings gravity, batch sparge 1 gravity and batch sparge 2 gravity, however somehow I forgot to get a sample once we starting heating for the full boil. How can I get a decent estimate on what my SG would have been?
Also, what would a decent estimate be for grain absorbtion? x quarts of water absorbed by x pounds of grain?
Thanks for all the advice while we moved to all grain. Many of you have been a real help.
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--Tom Waits
You can't be a real country unless you have a beer and an airline - it helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer.
--Frank Zappa
Currently in Primary: zip Currently in Secondary: Dry Stout Bottle Conditioning: Not a Thing Drinking: Run of the mill Pale Ale What's Next: Lake Walk Pale Ale
IIRC, .12 gallons per pound of grain is a typical absorption. If you were sure of your volumes for each of the runnings, you can do a straight average.
From what I would assume on that .12 gallons water/lb grain, that would be during the initial mash, since during the sparge the grains should have already absorbed water to their potential. Since we aren't "squeezing" out the grains, they should not absorb much water during the sparge. Would that be correct?
I tried the math, however it doesn't make much sense to me, since we ended up with 1.056 OG into the fermenter, and boiled off almost 2 gallons. That should make the wort's OG reading more concentrated than the SG.
13.75 qts of water for mash, running off ~ 2.2 gallons @ 1.085
11.3 qts for first sparge, running off ~ 11 qts @ 1.055
11.3 qts for second sparge, running off ~ 11 qts @ 1.018
We started at a little over 7 gallons, and expected to boil off about 1.5 gallons (we boiled off almost 2)
My math would be [(2.2 X 85) + (2.75 X 55) + (2.75 X 18)]/7 gallons = 1.055
Shouldnt this boil off to a higher concentration than what I got for my OG of 1.056?
__________________
I'd rather have a bottle in front of me, than a frontal lobotomy.
--Tom Waits
You can't be a real country unless you have a beer and an airline - it helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer.
--Frank Zappa
From what I would assume on that .12 gallons water/lb grain, that would be during the initial mash, since during the sparge the grains should have already absorbed water to their potential. Since we aren't "squeezing" out the grains, they should not absorb much water during the sparge. Would that be correct?
I tried the math, however it doesn't make much sense to me, since we ended up with 1.056 OG into the fermenter, and boiled off almost 2 gallons. That should make the wort's OG reading more concentrated than the SG.
13.75 qts of water for mash, running off ~ 2.2 gallons @ 1.085
11.3 qts for first sparge, running off ~ 11 qts @ 1.055
11.3 qts for second sparge, running off ~ 11 qts @ 1.018
We started at a little over 7 gallons, and expected to boil off about 1.5 gallons (we boiled off almost 2)
My math would be [(2.2 X 85) + (2.75 X 55) + (2.75 X 18)]/7 gallons = 1.055
Shouldnt this boil off to a higher concentration than what I got for my OG of 1.056?
[(2.2*85)+(2.75*55)+(2.75*18)]/7.7G=1.050
check your own math plz
__________________
primary1 :UTOPIA BABY(still searching for it)
secondary:middling bastard ipa
kegged:simcoe blonde, crystal pale ale, yellow jacket golden ale, lemon shandy blonde
DRINKIN DAWG BREWERY
LET'S GO RED WINGS
extraction calculator
grains in pounds(G) X 36(average points per gallon of grains) / batch size in gallons(g) = maximum efficiency(ME)
OG / ME = brewhouse efficiency
extraction calculator
grains in pounds(G) X 36(average points per gallon of grains) / batch size in gallons(g) = maximum efficiency(ME)
OG / ME = brewhouse efficiency
First All Grain session was a success!
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