Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > BIAB problems...what went wrong
Reply
 
Thread Tools
Old 06-20-2010, 01:15 PM   #1
JNye
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: Lansing, IL
Posts: 615
Liked 12 Times on 10 Posts

Default BIAB problems...what went wrong

Something off the wall happened and i don't know what it was. I did my first BIAB last night to check it out for smaller grain bills. SMaSH with Maris Otter. 5LBS. normal LHBS crush. used a paint strainer bag.

brought temp to 154*, added grain. stir. 20 mins 148* stir, bring heat back to 154* 20 mins, stir 152*, 20 mins stir. bring temp up to 175 for 20 mins. stir, drain bag. check gravity @ 1.012! for 3 gallons...SICK!!! since i already killed the enzymes i was screwed.
Luckily my LHBS is also a liquor store so I ran over there at 10 pm and got 3.3LBs of DME to save 3 hours of labor. final gravity of 1.048.
My Beersmith is on the fritz so if anyone wants to give me some stats I'd appreciate it. The efficiency must have been ~30%?

Possible problems....bag too small? but i was able to stir just fine and i have read of others using paint strainer bags.
Crush not fine enough...but this can't account for this bad of efficiency could it? something off the wall i don't know about like bad grain? maybe they gave me 6 row, i dunno?


JNye is offline
 
Reply With Quote
Old 06-20-2010, 02:08 PM   #2
2-0turbo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2009
Location: Paris, France
Posts: 125
Default

Well, I'm not sure. You don't say, but did you cool your sample before measuring the OG? If you measured at 175F, a 1.012 reading would be something like 1.039 corrected. You're not clear on that.

I have done stove-top BIAB for my last five batches now. You should have brought your strike water up to something like 165-170 before adding your grain to hit your target mash-in temp of 154. From my experience, trying to control the temperature of the mash with the burner is tough. I try to hit my strike and grain temps on target and not touch it. Perhaps as you said, you killed the enzymes--hard to say.

I use a large mesh bag I got from my LHBS. But, I see no reason why the paint back wouldn't work. I don't know your efficiency, but it was crappy. Not sure why. I suggest trying again and using Beersmith to adjust your strikewater temps to get your mash at the right level. Like I've said, I've done BIAB the last five batches. I never test for conversion, I've been hitting my gravities with a batch sparge after (I take the grain back out and put it into another pot and pour sparge water on top and let it sit for 10-minutes). My beers have been turning out great.

Anything different with the grain? Perhaps you didn't really get Maris Otter? Maybe the bag was bad?


__________________
-Matt

BB Primary 1: O'Flannagains Standard Stout
BB Primary 2: DFH-60 minute clone
BB Secondary 1: Dark Soul of the Night Russian Imperial Stout (Until Oct 2010 sometime)
Bottle Conditioning: None
On Hand: DFH-60 minute clone, Light Pilsner (Munton's kit)
Up Next: I dunno...I'm out of fermenters.
2-0turbo is offline
 
Reply With Quote
Old 06-20-2010, 02:27 PM   #3
JNye
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: Lansing, IL
Posts: 615
Liked 12 Times on 10 Posts

Default

i measure with a refractometer so thats not the problem. the first temp of 154* is the grain/water temp, not strike. I was very happy with my temps, i did lose 6* the first 20 minutes, not sure why, but bringing it back up to 154 was a breeze, burner very low for like 2 minutes, constant stirring.
I have never used maris otter before, so i can't coment, i guess i am looking for a solution that i have never heard of like bad grain, dunno if that is possible, i just don't get it.
i also sparged in a seperate pot after the mash was over. that water looked like I just washed a bunch of potatoes in it...starchy.
JNye is offline
 
Reply With Quote
Old 07-05-2010, 04:16 PM   #4
JNye
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: Lansing, IL
Posts: 615
Liked 12 Times on 10 Posts

Default

this batch just keeps getting better. yeast stalled out and i was getting no movement on my final gravity of 1.022. i added at least a tablespoon of amalyse enzyme.

I have never added the stuff to the fermentor cause i have always been too nervous it would just keep going. This time I said screw it, I want to see what this stuff can do. 2 days later its still foaming up and bubbling away. Will see how far this goes.

I have to say having this stuff around has been a lifesaver in that past(used it in a mash after I overshot my mash temp somehow, it saved 16 LBS of grain that time).
JNye is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Regulator problems? Or Judo problems? Judochop Bottling/Kegging 11 05-13-2015 03:14 PM
First all-grain...problems, problems, problems. Q2XL All Grain & Partial Mash Brewing 30 09-13-2013 11:02 PM
Wrong hops, wrong time. Any ideas? DansBrew Beginners Beer Brewing Forum 12 11-29-2009 12:38 AM
Always the wrong place wrong time OHIOSTEVE Wine Making Forum 7 10-04-2009 07:07 PM
Yeast Problems... wrong temp. herbstbrauerie Beginners Beer Brewing Forum 5 06-27-2007 12:22 AM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS