Why do a 90 minute boil?

I’m wanting to clone the Torpedo from Sierra Nevada, and the recipes say 90 minute boils. Is that necessary? What is gained other than bitterness from the early hop additions?

You will gain almost no bitterness with a 90 min. boil compared to a 60 min. boil. AFAIAC, there is almost never a reason to do a 90 min. boil. If you have a DMS issue with pils malt it might be justified but other than that I can’t think of a reason.

Interesting that you should say that, Denny. I thought maybe it helped with carmelization and whatnot. I kind of dread doing 90 minute boils, just adds more than I want to the brewday. I love doing a simple 60 minute mash and 60 minute boil. My brewdays are around 4 hours. Other than if I’m using Pils malt, I guess there really isn’t a huge reason to do a 90 minute boil…thought maybe it made a difference for IPAs.

Thanks Denny, I couldn’t think of or see a reason for a 90 minute boil. I’m sticking with a 60 minute mash, 60 minute boil.

If you don’t want to boil 90, wait until the hotbreak forms, usually in about 10 minutes, then go from there. It’s certainly not necessary though - I recently did a ~20 minute boil for an all late-addition beer and it’s crystal clear after a week at serving temp.

Wort does not caramelize in the kettle. You can’t reach the temp needed for caramelization. You do get other Maillard reaction products, though.

I do 75 minutes on everything non pils related.

I start the timer as soon as a it boils. This really just gets the hot break over with by the 60 minute hop addition mark, and away I go.

Q: the longer the boil the darker the result?

more time to boil off more water and get a higher gravity… that is all I got, other than DMS/Pils malt. Of course you could just collect less wort and get higher gravity too. I agree, rarely needed.

[quote=“muddywater_grant”]I do 75 minutes on everything non pils related.

I start the timer as soon as a it boils. This really just gets the hot break over with by the 60 minute hop addition mark, and away I go.[/quote]

Yep, same here.

Generally true.

With that in mind then, I’ve never made a yellow beer yet. Not that this is paramount to my wants but I’ve “almost” smashed 2-row with a little (little) munich and still got a shiny copper penny.

All pils boiled for 75 min. has gotten me a very light yellow beer.

Thank you for that. What was your objective/recipe/batch in mind?

German pils along the line of Bitburger.

I read an article once where the author said a 90 minute boil helps with hop utilization, bitterness, etc. I’m trying to find the article. He recommended 90 minutes for IPA’s, APA, etc. That doesn’t mean it’s true, but I think some people go by that. I started doing 90 minutes boils for my APA’s and they are coming out better, IMO.

According to this chart from How to Brew there is virtually no increase in utilization past 60 min. That’s not none, but it’s hardly enough to make it worth boiling lomger just for that.

http://www.howtobrew.com/section1/chapter5-5.html

I’ve posted this link before about the reason to do 90 min boils

http://bavarianbrewerytech.com/news/boilhops.htm

[quote=“chuck”]I’ve posted this link before about the reason to do 90 min boils

http://bavarianbrewerytech.com/news/boilhops.htm[/quote]

I think that’s the article I read. I just browsed it quickly, and he talks about a 90 minute boil, but not necessarily a 90 minute hop addition. I think I had confused that.

[quote=“chuck”]I’ve posted this link before about the reason to do 90 min boils

http://bavarianbrewerytech.com/news/boilhops.htm[/quote]

And as I’ve said before, I disagree. Many of the things he discusses happen simulataneously, not serially.