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General Category => General Homebrew Discussion => Topic started by: cheba420 on June 18, 2011, 10:54:37 am

Title: Timing Diacytal Rests
Post by: cheba420 on June 18, 2011, 10:54:37 am
So, Ive been brewing a lot of IPA's recently which require dry hopping. I'm not sure about my process here so I'd like to get some feedback. Typically, what I do is ride out primary fermentation, ramp up to do a diacytal rest for a day or so just above 70. Then I cold crash so I can drop out all of the yeast and then I dry hop the next day and let the hops ride for 5-7 days in the fermenter. Sound right?
Title: Re: Timing Diacytal Rests
Post by: tubercle on June 18, 2011, 12:14:04 pm
What does it taste like?
Title: Re: Timing Diacytal Rests
Post by: cheba420 on June 18, 2011, 09:40:00 pm
What does it taste like?
Pretty good. I cant say that I've ever tasted diacytal.......Just wanted to know if I should be hitting that rest before I dry hop or if they can be done concurrently. I know the answer is "whatever works for me". Just looking to hear how others do it.
Title: Re: Timing Diacytal Rests
Post by: Tristan on June 19, 2011, 08:08:18 am
Then I cold crash so I can drop out all of the yeast and then I dry hop the next day and let the hops ride for 5-7 days in the fermenter. Sound right?

I'd say if it ain't broke don't fix it!   ;D

Sounds like your d-rest temp is good.  For IPAs I don't think diacetyl is as pernicious as it is when brewing lagers if you're pitching the right amount of yeast at the right temperature..  Why the cold crash to drop the yeast?  Are you dry hopping in the primary fermentor?  I'd skip the "cold crash" and rack to a secondary fermentor to dry hop.  I'd move the cold crash to after you're done dry hopping to drop the hops before packaging.

I typically use gelatin on my drop hopped beers, so I'll cold crash to 35 degrees on day 7 of dry hop and gelatin on day 8.  The gelatin will do it's thing for days 8-10 then package.  Works like a charm for dropping the hops and results in a nice clear beer.
Title: Re: Timing Diacytal Rests
Post by: cheba420 on June 19, 2011, 11:19:19 am
Then I cold crash so I can drop out all of the yeast and then I dry hop the next day and let the hops ride for 5-7 days in the fermenter. Sound right?

I'd say if it ain't broke don't fix it!   ;D

Sounds like your d-rest temp is good.  For IPAs I don't think diacetyl is as pernicious as it is when brewing lagers if you're pitching the right amount of yeast at the right temperature..  Why the cold crash to drop the yeast?  Are you dry hopping in the primary fermentor?  I'd skip the "cold crash" and rack to a secondary fermentor to dry hop.  I'd move the cold crash to after you're done dry hopping to drop the hops before packaging.

I typically use gelatin on my drop hopped beers, so I'll cold crash to 35 degrees on day 7 of dry hop and gelatin on day 8.  The gelatin will do it's thing for days 8-10 then package.  Works like a charm for dropping the hops and results in a nice clear beer.
Thanks, Tristan. I use a ss conical for my fermenter, so I've been cold crashing before I dry hop just to get the yeast to fall out so I can harvest a good amount without the hop material getting in there. I've noticed that If I dont do a cold crash, the yeast clings to the sides of the fermenter. Cold crash and it all falls to the bottom. So, thats what I've been doing. How much gelatin are you using and is it in addition to Irish moss or some other fining material in the boil?
Title: Re: Timing Diacytal Rests
Post by: denny on June 19, 2011, 11:23:12 am
What does it taste like?
Pretty good. I cant say that I've ever tasted diacytal.......

Ya know the "butter flavor" on movie theater popcorn?  That's diacetyl.
Title: Re: Timing Diacytal Rests
Post by: cheba420 on June 19, 2011, 08:13:43 pm
What does it taste like?
Pretty good. I cant say that I've ever tasted diacytal.......

Ya know the "butter flavor" on movie theater popcorn?  That's diacetyl.
Nope. Never had that one pop up on me! Pun intended.:)
Title: Re: Timing Diacytal Rests
Post by: tubercle on June 19, 2011, 08:23:46 pm
What does it taste like?
Pretty good. I cant say that I've ever tasted diacytal.......

Ya know the "butter flavor" on movie theater popcorn?  That's diacetyl.
Nope. Never had that one pop up on me! Pun intended.:)


Then I would say too keep doing like you're doing.
Title: Re: Timing Diacytal Rests
Post by: Tristan on June 20, 2011, 07:44:16 pm
How much gelatin are you using and is it in addition to Irish moss or some other fining material in the boil?
I use small packets of Knox unflavored gelatin which can be purchased in 4 pack for $1 at Walmart.  I use one packet if I'm doing one keg at a time, but 1/2 packet in 5 gallons will do the trick.

Here is my process for adding gelatin:

Overnight or for 24 hours I'll chill the beer below 50 degrees.  I try to get it as close to 35 as I can.  After the beer is chilled, prepare the gelatin:

1)  Fill a pyrex or other microwave safe container with 6-8 oz of water
2)  Boil the water (on our microwave which is 1200 watts, I set it for 8 minutes, it starts boiling within the first 3 minutes)
3) With a piece of foil, sprayed with star san ready, open the microwave door and quickly cover the pyrex.
4)  Sanitize a thermometer with Star San and stick it through the foil into the water.  The thermometer is a nice tool to stir with and take the temperature as well.
5)  When the temp of the water falls below 190 pour in half a packet of Knox unflavored gelatin and stir the thermometer.  Above 190, you'll actually make gelatin and get some nice chunkies in your final beer :)~
6)  Leave the solution for 5-10 minutes to let the gelatin "hydrate."  
7)  Pitch the solution into the beer while it's still above 110F, then mix in gently.  

After 24 hours you'll see a huge difference.  I usually shoot for 2-3 days.  My drop hop schedule is usually 68-70 degrees days 1-6.  Day 7 chilling the beer and days 8-10 gelatin.  
Title: Re: Timing Diacytal Rests
Post by: tomsawyer on June 23, 2011, 03:00:53 pm
Doesn't the gelatin clump in hot water?  I know you have to stir and stir when you make Jello.  I think its easier to add it to room temp water, let it hydrate and then heat to melt.  This is how I prepare gelatin to be used for wood glue.
Title: Re: Timing Diacytal Rests
Post by: jeffy on June 23, 2011, 03:51:08 pm
Doesn't the gelatin clump in hot water?  I know you have to stir and stir when you make Jello.  I think its easier to add it to room temp water, let it hydrate and then heat to melt.  This is how I prepare gelatin to be used for wood glue.
I found this to be better as well.  Far less clumping when added to cold liquid.
By the way, I use a cup of the beer I intend to clear instead of water.