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Old 10-01-2009, 12:31 AM   #1
rival178
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Default my first brew is Glacier Pale Ale, question about extract

I see in the instructions to only add have of the extract at the beginning of the boil, then add the rest after 60 minutes and take off the heat. I'm new but have never seen the split of the extract this way. Anyone ever done it this way?

Here is a link to the instructions: http://www.highgravitybrew.com/docs/GlacierPaleAle.pdf

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Old 10-01-2009, 04:37 AM   #2
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The reason it suggests this has to do with hop utilization rates. As gravity of the wort increases, hop utilization decreases. By not adding all the extract, the bittering hops will be boiled in a lower gravity wort, allowing better utilization and higher IBU rates.

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Old 10-01-2009, 04:39 AM   #3
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If you add all the extract in the beginning, you will not acheive the same utilzation, and the beer will be unbalanced and most likely too sweet/malty.

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Old 10-01-2009, 05:06 AM   #4
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The main reason for the late extract addition is to reduce caramelization, which will lighten the color and ensure that your pale ale doesn't look like a brown ale.

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Old 10-01-2009, 05:58 AM   #5
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Great info here thanks.

other question. here are the instructions:

"60 minutes into the boil: Add remaining malt extract and stir till disolved. Add aroma hops. Remove from heat. Discard hops after 5 minutes"

Sooooo the last half of the malt extract is only in the pot for the last 5 minutes with NO HEAT?

Matt

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Old 10-01-2009, 03:29 PM   #6
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If you do a full boil ignore it. It's most useful for partial boils.

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Old 10-01-2009, 03:31 PM   #7
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Quote:
Originally Posted by rival178 View Post
Sooooo the last half of the malt extract is only in the pot for the last 5 minutes with NO HEAT?

Matt
yep....you got it right.
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