Benefits of a 90 min boil?

[cheesehed007]

I'm doing Northern Brewer's Lakefront Fixed Gear American Red Ale. And the sheet calls for a 90 min boil. Being this is an extract kit. Wouldn't that caramelize the wort more? Also should I also do late addition of LME? This kit has 9.15 lbs of Gold malt syrup. Here's a link to the sheet. Thanks and cheers!
http://www.northernbrewer.com/documentation/beerkits/FixedGear_Pro_Lakefront.pdf

 

[KepowOb]

I just read through the instructions and it said 60-minutes, not 90....

 

[cheesehed007]

At the beginning it says lakefront recommends a 90 min boil with first hop add at 60 min.... Thanks for the reply! Cheers. .. Edit.. Just above "Kit inventory"

 

[KepowOb]

Heh, sorry about that, I'd skipped ahead to the procedure section, where they not mention 60 minutes... I find it strange they'd recommend a long boil like that... I'm a bit intrigued now, hopefully someone more knowledgable chimes in

 

[LabRatBrewer]

90 minute boil is probably to reduce DMS.

 

[cheesehed007]

Heh, sorry about that, I'd skipped ahead to the procedure section, where they not mention 60 minutes... I find it strange they'd recommend a long boil like that... I'm a bit intrigued now, hopefully someone more knowledgable chimes in

No worries. I'm about 30 min from flame out... So we'll see how it turns out. Cheers!

 

[cheesehed007]

90 minute boil is probably to reduce DMS.

Is that a problem with extract kits? Thanks for the reply! Cheers.

 

[KepowOb]

90 minute boil is probably to reduce DMS.

I was under the impression that DMS is less of an issue with extract, though I've been known to be wrong from time to time.

 

[fizgig]

I imagine they did not get different recommendations from Lakefront for all grain and extract, the rest of the instructions proceed with a 60 minute boil.

 

[BigFloyd]

I imagine they did not get different recommendations from Lakefront for all grain and extract, the rest of the instructions proceed with a 60 minute boil.

That's a solid bet.

 

[flars]

90 minute boil is probably to reduce DMS.

Boiling LME re-builds the precursors for DMS.

 

[LabRatBrewer]

Boiling LME re-builds the precursors for DMS.

But if you're boiling for 90 minutes (with the lid off) wouldn't that drive them away? If I am wrong (which is highly possible) why would you use such a long boil for en extract recipe?

 

[flars]

But if you're boiling for 90 minutes (with the lid off) wouldn't that drive them away? If I am wrong (which is highly possible) why would you use such a long boil for en extract recipe?

Boiling with the lid off or partially off will allow DMS to escape. 90 minutes is a long boil especially beginning with 2.5 gallons of water. Hope the OP posts back on the results.

 

[pkrath84]

Pardon my ignorance, but I just want to make sure I'm getting this right ...

DMS is dimethyl sulfide, right?

 

[flars]

Pardon my ignorance, but I just want to make sure I'm getting this right ...

DMS is dimethyl sulfide, right?

You are right. Here is a link to Palmers book about dimethyl sulfide.
http://www.howtobrew.com/section1/chapter7-2.html
When I boil I have the lid partially on to reduce the amount of heat necessary to maintain a good boil. I wipe the condensation from the bottom of the lid so it does not drip back into the beer.

 

[TangoHotel]

I've moved to 90 minute boils. I like the results hat I get with them. I just add more water before the boil to compensate. I'm boiling from about 7.5 gallons and ending with 5.

 

[cheesehed007]

Here's the reply I got from Northern Brewer today .. Guess we'll see how it turns out 4-5 weeks or so. Thanks for all the replies!

Hi Bruce,

The large volume of wort will generally have a darker color than smaller samples will show in a glass. That being said, the ninety minute boil is meant to increase kettle caramelization leading to a deeper wort color & increase in malt flavor intensity. I'd hold out hope & taste a sample after primary fermentation is complete. That kit typically needs 3-4 weeks of aging in secondary or extra time spent in the bottles to yield a beer with a balanced, but hoppy, flavor.

Cheers!