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Chefjp 08-27-2012 12:24 AM

90 min. boil cons and pros
 
hello, ive brewed a stone IPA clone, from BYO. it calls for a 90 min. boil with 2 hops at 90 min.
can some one tell me the pros and cons of doing a 90 min. boil?

thanks

Yooper 08-27-2012 01:15 AM

Quote:

Originally Posted by Chefjp (Post 4363311)
hello, ive brewed a stone IPA clone, from BYO. it calls for a 90 min. boil with 2 hops at 90 min.
can some one tell me the pros and cons of doing a 90 min. boil?

thanks

Some pros: slightly more hops utilization, maybe some more maillard reactions and darkening of the wort, increased boil-off, increased vaporization of DMS precursors.

cons: the same.

jbaysurfer 08-27-2012 01:21 AM

Quote:

Originally Posted by Yooper (Post 4363454)
Some pros: slightly more hops utilization, maybe some more maillard reactions and darkening of the wort, increased boil-off, increased vaporization of DMS precursors.

cons: the same.

Other cons: Propane usage (or whatever energy source you use), time spent.

But get one creamy corned blond ale and you won't care about the cons. DMS sucks.

Chefjp 08-27-2012 01:38 AM

Quote:

Originally Posted by Yooper (Post 4363454)
Some pros: slightly more hops utilization, maybe some more maillard reactions and darkening of the wort, increased boil-off, increased vaporization of DMS precursors.

cons: the same.

so, you do recomend it?

LoneWolfPR 08-27-2012 01:44 AM

If you have any significant amount of Pils malt especially in a recipe I'd always use a 90 minute. Pils puts off a lot of DMS, and the 90 minute boil should get rid of it all. There aren't any serious reasons I've seen not to do a 90 except propane usage.

nukebrewer 08-27-2012 01:58 AM

I've only ever used an extended boil to get to my desired batch volume. It was for a Belgian-style Pale Ale and I didn't notice any flavors that would be characteristic of excessive Maillard reactions or scorching. That beer is still bottle conditioning, so the final verdict isn't out yet. We'll see.

Calichusetts 08-27-2012 11:11 AM

Longer boils lower PH levels, created greater coagulation of protiens, better hop utilization, greater removal of dms...and in terms of malliard reactions, longer boils will bring out stronger characteristics of the grains. Randy Mosher said that a 120 minute boil is a "go around" instead of doing decoctions but getting similar results.

90 minutes is now my minumim boil time...

Yooper 08-27-2012 12:15 PM

Quote:

Originally Posted by Calichusetts (Post 4364197)
Longer boils lower PH levels, created greater coagulation of protiens, better hop utilization, greater removal of dms...and in terms of malliard reactions, longer boils will bring out stronger characteristics of the grains. Randy Mosher said that a 120 minute boil is a "go around" instead of doing decoctions but getting similar results.

90 minutes is now my minumim boil time...

I think several brewers I know typically do 90 minute boils. I still do 60 minute boils, except for beers with lots of pilsner malt.

I think it would be a great experiment for someone to do the same beer with a 60 minute boil and a 90 or 120 minute boil, and check pH going into the kettle, after a 60 minute boil, and after 120 minute boil, and then measure the amount of break material somehow. That would be really cool, to see the differences.

billl 08-27-2012 01:20 PM

For an extract batch - basically no pros.

For an all-grain batch - Better break and DSM elimination.

Additionally, a longer boil can be useful for "big beers". Your efficiency always drops as the grain bill increases. An easy workaround is to increase mash and sparge volumes and then just boil down to the right batch volume. That concentrates the larger wort volume and gets some extra points on your OG.

TyTanium 08-27-2012 01:57 PM

Quote:

Originally Posted by LoneWolfPR (Post 4363535)
If you have any significant amount of Pils malt especially in a recipe I'd always use a 90 minute. Pils puts off a lot of DMS, and the 90 minute boil should get rid of it all.

This is the conventional wisdom, but a number of brewers do hard, 60min boil and have no DMS issues. I believe Denny is one of them.


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