Grinder12000

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What does one gain from an extended biol time ???

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Grinders Island Brewery - Pipeline (Batch #)

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Next up - Award winning Dbl Chocolate Stout Batch #4 (90) On deck - Zythos Pale Ale(91) and then Weizenbock(92)

billtzk

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Reduction of volume. Carmelization of sugars. Greater hop utilization. More time to relax with a good cigar and a homebrew while you enjoy the wonderful aroma of boiling wort.

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Whisler85

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Melanoidin flavors, a little more bitterness from your bittering hops (if they are boiled the whole time), a lot less flavor/aroma from your bittering hops (useful if making, say, a scotch ale where hop flavor/aroma are undesired)

also reduces dimethyl sulfide (DMS), the smell you get from canned corn- good to reduce this in light pilseners

also, i often end up using more mash/sparge water than i wanted due to temperature adjustment, so its useful in hitting your target gravity- if the gravity is too low, just keep boiling!

Yooper

Recipes 

So that you can boil off more wort?

I usually boil until I'm at 6 gallons, the add my 60 minute hops and start timing. You can get a few more IBUs out of boiling them for as long as 75 minutes, but not much.

The only time I plan on a 90 minute boil are when one of two things is true:

1. Using pilsner malt. If I'm using pilsner malt, everything I've read says to do a 90 minute boil to boil off more DMS. I don't know if this is always needed, but it's what I do.

2. In a bigger beer, my efficiency decreases quite a bit (and it's not great as it is) so I'll do a longer boil and try to increase my sparge runnings. This works well, because I'm using more grain and should actually use more sparge water as a result. So, I'll sparge more and boil longer to get closer to my intended OG.

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BigKahuna

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I have this feeling we've discussed this before.

OH YA...>WE DID.....IN YOUR THREAD WITH THE SAME ****ING NAME!

http://www.homebrewtalk.com/search.php?searchid=2587197

and one day before that...someone else asked it....here:
http://www.homebrewtalk.com/f14/90min-vs-60min-boil-87058/

Maybe a mod could combine all of these or something...just so you don't get confused and start yet another.

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Grinder12000

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Well - I searched and found nothing. I even searched 60 vs. 90 minute boil and found nothing - get off your high horse again BIG.

Seriously - get over it and deal with it.

I SWEAR Yoop - he just waits for me to mess up - I'm glad he is the cop here!! Good God!

__________________
Grinders Island Brewery - Pipeline (Batch #)

Primary #1 Hair of the Arm West Coast Blaster - don't ask(89)
Next up - Award winning Dbl Chocolate Stout Batch #4 (90) On deck - Zythos Pale Ale(91) and then Weizenbock(92)

BarleyWater

Recipes 

I think it smells like corn tortillas...

But ya, pretty much all of those reasons are the answer. I always boil for 90 minutes to get better effeciency and to allow for more malliard reactions in my beers, giving a toastier malt profile. And if you've ever brewed with pilsner malt, you will understand why you want to ake sure you boil off all the nasty SMM (DMS precursor), it smells like corn tortillas.

EDIT: This is assuming ya'll up north know what corn tortillas smell like. I eat them on a regular basis, but I also eat a lot of Mexican food, which may not be the case for the rest of you.

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Yooper

Recipes 

No, it's ok. Sometimes questions come up, and we don't want to dissuade people from asking questions.

Let's keep this friendly and not allow be nitpicky about who starts what thread. I read all the threads, but I don't see much duplication.

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Broken Leg Brewery
Giving beer a leg to stand on since 2006

BigKahuna

Recipes 

100% agree.
Sorry, and I didn't ever mean to dissuade anyone that may be reading this. These are questions that are worth talking about.
.

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Hugh_Jass

Recipes 

In last night's brew session, I missed my beginning water add.(stupid noob mistake added too much water). The brew was a partial mash, DME, and LME. The boil time was supposed to be 60 min, but I had already added my DME, wort from the mini-mash, brought to a boil and added the first hops before I realized there was NO WAY that that much liquid would boil down to 5.5 gallon. Instead of adding the remaining hops on their schedule, I delayed the rest of the hop adds by 15 min. The first hops were boiled an additional 15 min, but the rest were added on schedule (20 and zero). Bottom line - the wort was boiled an additional 15 min with the first hops. Hit the anticipated O.G. on the nose. How will this affect the beer? Beginning hops were Williamette Pellets. Thanks in advance.

<edited for clarification>