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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Big brewday this weekend big as in a Russian Imperial Stout, anything I need to know?
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Old 02-06-2009, 01:14 AM   #11
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A paperclip tip of olive oil will make your beer really, really happy. This thread will introduce you to the idea and hopefully convince you to try it. All I know is that I've never seen a more vivacious fermentation than my brews with olive oil.

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Old 02-06-2009, 01:51 AM   #12
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I have done several 'big' beers, and yeah, efficiency suffers a bit, but you can make up most of it with a little more sparge water and a 90 minute boil. I really do not think you need to pitch twice, a single pitch of a nice healthy starter will do fine. Granted, I have never used 002... Hopefully you know the yeast. I think if you pitched a second batch of yeast into a high alcohol environment, they would just head straight for the bottom. Any time I get above 1.09, I make a small batch and pitch on the cake.

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Old 02-06-2009, 02:08 AM   #13
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For adding a good amount of O2 you can try what I do during transfer from kettle to fermenter....assuming you have an auto-siphon.

Basically, I bring the tip of the siphon to the wort line in the kettle. Begin pumping with the tip half in, half out. It gets very frothy in the auto-siphon as it transfers.

It's worked well for me. Good luck.

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Old 02-06-2009, 04:07 AM   #14
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“Begin pumping with the tip half in, half out“<--hahaha

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Old 02-06-2009, 04:36 PM   #15
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Quote:
Originally Posted by flyangler18 View Post
I'd set it for 70% just to be safe; I usually see a 10% drop for the big honkin' barleywines and RISs.



If you have enough time, crash the starter to drop the yeast and decant the starter beer and add fresh wort.



Close. I can't seem to find the picture where BierMuncher posted it, but churn that wort with the IC as vigorously as you can. You can get some serious frothing action. Another simple aeration aid is a Venturi tube, discussed here.
Thanks, I crash cooled the finished starter last night and made up another batch this morning and pitched it onto the yeast and set it on the stir plate.

I will probably pitch it on Sunday, but brew tomorrow. There was a lot of yeast from the first starter, there should be plenty for this beer, I just hope it gets in the lower 20s for the final gravity.
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Old 02-06-2009, 08:27 PM   #16
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If you want to get out some of those left over sugars (ie efficiency drop of 10+%), make a second beer from the mash, aka partigyle.

<edit>Ha! I see you already created another thread asking about partigyle.</edit>

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Old 02-07-2009, 09:47 PM   #17
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Well I am brewing this right now, almost done. I came in low on my pre-boil gravity, but I also had a extra 1.25 quarts of wort that I can burn off.

I was at 1.071 for pre-boil with 7.6 Gallons.

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Old 02-09-2009, 05:13 PM   #18
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The brew session went well for the most part. Although, up to this point I have always done a double batch sparge, but with this time around with all the volume I got on emptying the Mash the first time, I just added the amount I needed to boil still and only did 1 sparge.

This may have hurt my efficiency a bit because the temp only got up to 162, I usually try to get as close to 170 without going over usually.

When I was all said and done, I had a OG of 1.095 and a brewhouse efficiency of 75%, so it looks like the 10% drop is right on target, I usually get 85% with all my other brews.

P.S. I posted some pictures in the photo forum too.

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Old 02-21-2009, 06:24 PM   #19
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So I just used my new refractor to check where this beer is at after 2 weeks and it said 11.5 brix and using the refractor tool in beersmith with a starting gravity of 1.095 that is converted to 1.016

I will have to double check this with the hydrometer, but holy crap.

This was also with WLP002 which I was worried about not attenuating that well.

I tried to get it to do its best by mashing at 149 for 75 minutes and then I had about a 3.5-4 liter starter made.

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Old 02-21-2009, 07:52 PM   #20
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yeah......if you used a refractometer to check FG, it will be off. They are only good for SG. The alcohol throws it off.
Check with a hydrometer.

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