Ok so I did my first all grain brew today. I did 5lbs of wheat and 5 lbs of maris otter. Brewbuilder had it at 1.057 OG. I put 3.5 gal of 170F water in the tun then added the grain. I stirred like crazy. when I was done it was at 155F so I closed it up for 1.25 hrs.At this time it was at 150F and I drew first runnings. I then sparged 3 more gallons for 20 min and took second runnings. I then sparged 1 last time with 3 gallons but left probably 1 gallon of wort in the tun as I was at 6.5 gal in my wort before boiling so I stopped. I took a SG reading which at 155F came out 1.034???? Well I boiled it anyways of course. After 1 hr boil I came in at 1.050 at 70F with 4.5gallon left??? This seems like a huge swing between my original wort and my end of boil wort. How bad did I do for efficiency as I used 10lbs of grain? Was this good for my first AG?
Is this right?
- Thread starter Cimerian
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bullinachinashop
Well-Known Member
Plug your numbers into an efficiency calculator. I'm drinking and am being lazy!
You can check this at pre boil volumes with a simple equation. Cool and correct to 60 degrees.
Preboil OG x Vol = Postboil OG x Vol
Bull
You can check this at pre boil volumes with a simple equation. Cool and correct to 60 degrees.
Preboil OG x Vol = Postboil OG x Vol
Bull
Remember that a reading at 155 degrees is worthless- anything over about 100 degrees is not even close to accurate. Once you cool the sample to under 100 degrees in a pitcher of ice water or in the freezer, then you can check your preboil gravity and use a temperature correction chart to correct the reading at your calibration temperature.
OP
OP
Cimerian
Well-Known Member
I did not even think of this. Well it is to late now my beer should be about halfway into starting its ferment.
Yep, and it'll be fine, I promise!
OP
OP
Cimerian
Well-Known Member
Oh I will still drink it I promise!
