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Old 08-03-2010, 09:34 PM   #1
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Default extract boil size

Is it ok to do a full boil using extracts.

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Old 08-03-2010, 09:36 PM   #2
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absolutely.

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Old 08-03-2010, 10:10 PM   #3
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Just be careful when adding your extract, I like to take my pot off the burner to avoid scorching.

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Old 08-05-2010, 06:41 AM   #4
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Not only is it OK, but it is prefered. The one thing you will have to make sure is you adjust the hop amounts and schedule for the boil volume. Hop utilization is the thing that will be thrown off by volumes the most. Other than that no concerns.

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Old 08-05-2010, 12:53 PM   #5
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Make sure you mix in the extract so it doesn't accumulate at the bottom, and temper the boil well just for safety.

Yes it is preferred.

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Old 08-05-2010, 07:19 PM   #6
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I just went to full wort extract boils about 4-5 batches ago. I bought a 9 gallon kettle and a Bayou Classic SP50 propane burner. I love the beers that I'm making now. Much less affect on color in the boil and better hot/cold break and trub separation. Go for it! I wouldn't recommend doing full wort boils on your stovetop either (simply not enough power to get it up to a rolling boil this week). If you get (or have) a propane burner, have your hand on the flame throttle as the wort nears boiling. It will boil over in the blink of an eye!

As far as hops, some folks will argue that hop utilization is independent of boil gravity. I can't say for certain either way on that. However, I was doing 50/50 late extract additions in a 3 gallon boil and now I put all the extract in up front in a 7 gallon boil without changing the hop regimes. I haven't noticed any perceptible difference in bitterness.

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Old 08-07-2010, 11:27 AM   #7
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Like was said, I have noticed much better beers with a full boil and you use less hops then with a par boil. Win Win. Just takes longer to get up to a boil. let us know how great the beer turns out.

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Old 08-07-2010, 01:59 PM   #8
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I recently went to full wort boils and late extract additions. But recently learned that John Palmer and others are now saying that hop utilization rates are not dependent on wort gravity but on the amount of hot break material. Since extract brewing has little break material compared to AG brewing we don't really have to adjust our recipes when the gravity changes. The majority of the break materiel was already removed when the extract was made.

The next edition of "How to Brew" is supposed to be rewritten with a change in that section to cover this new info.

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Old 08-07-2010, 02:57 PM   #9
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Quote:
Originally Posted by 73Drvr View Post
I recently went to full wort boils and late extract additions. But recently learned that John Palmer and others are now saying that hop utilization rates are not dependent on wort gravity but on the amount of hot break material.

The next edition of "How to Brew" is supposed to be rewritten with a change in that section to cover this new info.
I've heard the same thing. John and Jamil make the argument all the time on Brew Strong.
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Old 08-07-2010, 04:44 PM   #10
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Just have another pot on hand if you're doing 5 - 6 ga. batches and only have a 5 ga. kettle

I had my own baptism-by-fire experience with my last batch which is promising to be something I am actually proud of (provided it clears someday)

I did a partial mash, with the idea being 5.5 gallons in the carboy. After a few panicked mathematical "holy crap" moments, I ended up splitting a 6.5 ga. boil between 2 5-gallon kettles, adding equal amounts of the LME and DME in my recipe to both, splitting the hops as well (although I could have been more diligent about the hop additions).

I ended up with about 5 ga. of wort that I topped off with 1/2 ga. of water. OG was 1.08 which was slighty higher than tastybrew said it would be - so I was pleased with the results.

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