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Old 10-23-2007, 11:07 PM   #11
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When I make a five gallon batch, I start with 6.25 gallons in the kettle. After one hour, I have about 5.25 gallons in the kettle. After I transfer to the fermenter (through a strainer), I have just a tad over 5 gallons in the primary fermenter.

I lose about 9% per hour in the boil. That is my evaporation rate. Most people who do extract brewing just top off to 5 gallons in the primary, using water. That's absolutely fine. But when you do AG, you don't top off. You boil down to get 5 gallons. That's the difference.

Hops utilization is improved in lower gravity wort. That is, say you're doing a 3 gallon boil. You then top off with 2 gallons to get your volume in the fermentor. Well, in order to get a og of say, 1.050, your water that you'll be adding is 1.000. So your boiling wort is higher (maybe 1.070 or so) due to the dilution. (I didn't figure this all out mathematically, I'm just guessing)

That's why there is a difference in hops utilization.

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Old 10-24-2007, 12:13 AM   #12
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didn't realize that you boil that much water off in an hour. I'm interested in the straining. Your the first person I've heard say they strained the wort going into the fermenter. Does this make a big difference in taste or just to help clarify. Isn't this mostly hops at this point that your straining out.

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Old 10-24-2007, 12:42 AM   #13
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Yes, straining out the whole leaf hops especially.

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Old 10-24-2007, 03:57 PM   #14
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Quote:
Originally Posted by david_42
Only the bittering hops need to be adjusted. Flavor and aroma are mainly oils that are not impacted by gravity.

2 oz. of Cascades is over the top for a SN clone. Not saying it's a bad thing.

Yeah, i am a bit of a hop head. and the guy at my LHBS said someone dryhopped the same kit with 5oz of cascades, so i figured 2 would be good.....i guess i'll find out soon enough
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Old 10-30-2007, 09:53 AM   #15
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Quote:
Originally Posted by LouT
Yes, straining out the whole leaf hops especially.
Is it not as necessary using pellet hops? (what our LHBS provides) (and doing extract recipes for that matter)
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