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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > BIAB efficiency question - 71% good? bad?
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Old 02-24-2011, 12:17 AM   #21
brettwasbtd
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Quote:
Originally Posted by AZ_IPA View Post
consistency is more important than the actual number; if you are interested in being able to repeat results...
+1 - Just got my 2.5 gallon all grain setup and I'm trying to dial it in. Id much rather be able to repeat and spend another $2 or so on grain.

Additionally, a large beer in that gravity range (1.100) is going to have a lot lower efficiency than usual for most homebrewing setups. Mainly cause you aren't using as much water per pound of grain when sparging. So 71% for a BIAB at that gravity sounds pretty solid to me!


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Old 01-28-2012, 07:08 AM   #22
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+1 to all who stated that consistency is more important than efficiency. I've been an avid BIABer for the last 5 months.... having close to 12 beers with this method under my belt. No sparge used on this end, and consistently hit between 74-75% efficiency. Fine crush, stirring about every 10 minutes, and draining/spinning/squeezing the bag after. Works every time. Sparging is not necessary at all!


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Old 01-28-2012, 09:01 AM   #23
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I found that crush was the deciding factor in getting better efficiency in BIAB. Once I got my own mill, and started trying different crushes, I started improving efficiency into the high 70s. I'm hitting 76-78% consistently now, not sparging, and not squeezing my bag. However, after draining my bag above the kettle for a couple minutes, I then suspend it above a small pot to catch any additional runoff. I usually end up with another quart or so...
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Old 01-28-2012, 01:14 PM   #24
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If you start squeezing the bag you'll find that you can extract another quart or more of really sticky, high sugar wort and that will increase your efficiency. I think you are leaving a lot of sugars by not squeezing.
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Old 01-28-2012, 06:22 PM   #25
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If you start squeezing the bag you'll find that you can extract another quart or more of really sticky, high sugar wort and that will increase your efficiency. I think you are leaving a lot of sugars by not squeezing.
I used to squeeze, and I used to sparge the bag, and results were inconsistent. Remove them from the process and you gain consistency.


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