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04-16-2009, 07:40 PM
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#1
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Senior Member
Join Date: Apr 2009
Location: MD
Posts: 189
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Advantages/disadvantages of grain bag??
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Is there any advantages/disadvantages on using a bag for both the grain and hops to avoid excessive trub?
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04-16-2009, 07:55 PM
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#2
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Senior Member
Join Date: Jan 2008
Location: Nashville, TN
Posts: 245
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utilization and efficiency can suffer.... try it out see how you like it... it may not matter much for ya
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04-16-2009, 07:58 PM
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#3
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Senior Member
Join Date: Apr 2008
Location: NE Oklahoma
Posts: 1,483
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i assume you are talking about a minimash on the grain side??
and if you are not going to use the bag and buy - build a MLT why not just do all grain ?
__________________
Once, during Prohibition, I was forced to live for days on nothing but food and water. ~ W.C. Fields
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04-16-2009, 08:40 PM
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#4
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Senior Member
Join Date: Feb 2009
Location: Alexandria, VA, USA
Posts: 2,059
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Without a bag you need a 3-vessel setup, and you can't crush as finely so you need a sparge to get good efficiency. There's more to clean and the whole system takes longer on brew-day. You can handle almost arbitrarily large batches, depending on the size of the setup. Step/decoction mashing are easier.
It's tough to do batches bigger than 10 gallons in a bag, and you need a pulley to do those (5 gallons can be lifted by hand). It's much cheaper and easier to get started than a 3-vessel. You don't need to save out volume for sparging, so you can do a much thinner mash. You want a bag that fully lines the inside of the pot to get good efficiency (a smaller bag will hurt efficiency). Efficiency seems to top out somewhere around 85% in a bag.
__________________
On deck: Little Bo Pils, Bretta Off Dead (Brett pale)
Secondary: Oude Bruin, Red Sky at Morning (Sour brown ale)
On tap: Saison Duphunk (sour), Amarillo Slim (IPA), Earl White (ginger/bergamot wit)
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04-17-2009, 03:03 AM
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#5
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Senior Member
Join Date: Oct 2007
Location: interior Alaska
Posts: 1,210
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An eight dollar grain bag that can handle 5-6 pounds of grain in a 5 gallon kettle is about the top end for an aprtment dweller unless you can go all grain on your deck or terrace.
Compared to doing a pound or two with a collander or strainer it is eight dollars well spent.
I just whirlpool to keep hops in the kettle and out of the fermenter. I can't leave my bag in the kettle during the boil cause it would melt.
HTH, was that the question?
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04-17-2009, 11:39 AM
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#6
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Senior Member
Join Date: Apr 2009
Location: MD
Posts: 189
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Thanks for the advice everyone.
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04-17-2009, 02:41 PM
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#7
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Cranky Old Guy
Join Date: Oct 2005
Location: Willamina & Oak Grove, Oregon, USA
Posts: 24,799
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A big grain bag makes the whole process of partial mashes or steeping much easier. I've never had a problem with efficiency, even when I just teabag to sparge.
__________________
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
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04-17-2009, 02:57 PM
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#8
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Senior Member
Join Date: Oct 2008
Location: Grand Rapids, MI
Posts: 853
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I've been doing the BIaB (Brew in a bag) method since January and I have gotten efficiency in the mid to high 70's even on huge grainbills for my equipment (12.xxlbs in a 5gal pot)
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04-17-2009, 10:45 PM
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#9
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Senior Member
Join Date: Jan 2009
Location: Gainesville, FL
Posts: 1,063
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+1 on BIAB. Also, I heard about "paint straining bags" here on this forum and found some at the local gigantic hardware store. I can NOT imagine brewing without them now. They are the perfect size/fineness. I do sort of BIAB and by using the paint strainer, you don't need to do a recirculation to clear the wort. Just pull the bag out and you're done.
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05-03-2009, 04:58 AM
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#10
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Senior Member
Join Date: Feb 2009
Location: Blue Springs, MO
Posts: 261
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Its been a while since anyone posted to this thread, but I didn't want to start another.
I did my first BIAB today. It was the most relaxed brew day I can recall ever. I am leaving on fishing trip tomorrow and I can't find one of my fly bags. I was actually able to look for and find the fly bag while brewing. I was constantly thinking I forgot something and thinking I needed to write something down, but I didn't. I did a 3 step mash 50/60/70, and I got 75% efficeinecy, which blew me away as I set my calculator for 70% and thought I'd be lucky to get that. I've been brewing smaller batches the last few sessions. Today I did an APA with 3.5 into gallons into fermentor. I can't speak for large batches, but if its 5 gallons or less this is my method from now on.
I liked the fact doing the 3 step, the first rest didn't need any heat (15 min 50C), the second step (45 min 60C) only needed a few small bursts of heat, and the last rest (15 Min 70C) I ddin't touch it.
The wort is cloudier when boiling, but I got a good break.
One thing I do all the time I got from this site is put my chiller into a bag before the end of the boil. I pull the chiller w/ bag, give it a good whirlpool with a spoon, and let it settle a bit, put the chiller and bag back into pot and rack with the cane inside the bag. I also just chuck the hops into the boil with this method.
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