Kegconnection Complete Starter Kit and More Giveaway!


Home Brew Forums > Home Brewing Beer > Brew Science > When Yeast Does What.

Reply
 
LinkBack Thread Tools
Old 04-22-2009, 06:49 PM   #1
wendelgee2
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2008
Location: New York, NY
Posts: 324
Liked 2 Times on 2 Posts

Default When Yeast Does What.

(Using Safale S-04 and almost 100% light DME)

So, I brewed Sunday evening, had the windows open, so I pitched cool: 66F.

Closed the windows around 9, and the beer sat overnight: 68-70F.

By the next night (24 hours after pitching) my landlord had the heat up in the apt: 83F.

Yesterday (48 hours after pitching) it had leveled off a bit: 75F.

The heat is now off: 68-72F. Back to normal ale temps.

I'll keep it in the primary for 3 weeks.

The question is, when does a yeast do what? Will this crazy temp spike at 24-48 hours cause off flavors? If so, which? Esters? Fusels?

__________________
wendelgee2 is offline
 
Reply With Quote Quick reply to this message
Old 04-22-2009, 07:43 PM   #2
menschmaschine
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2007
Location: Delaware
Posts: 3,278
Liked 31 Times on 26 Posts

Default

Quote:
Originally Posted by wendelgee2 View Post
The question is, when does a yeast do what? Will this crazy temp spike at 24-48 hours cause off flavors? If so, which? Esters? Fusels?
Yes and yes. The early time of fermentation is the most important in regards to the production of flavor-active compounds. If your beer fermented early on in the 80s, you'll probably get some esters and fusels.
__________________

END TRANSMISSION

menschmaschine is offline
 
Reply With Quote Quick reply to this message
Old 04-22-2009, 08:28 PM   #3
Tonedef131
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2008
Location: Fort Wayne
Posts: 1,906
Liked 20 Times on 10 Posts
Likes Given: 3

Default

Who the hell turns the heat up to 83F? If I came home to an 83F thermostat that landlord would get stabbed.

__________________
Tonedef131 is offline
 
Reply With Quote Quick reply to this message
Old 04-22-2009, 09:37 PM   #4
wendelgee2
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2008
Location: New York, NY
Posts: 324
Liked 2 Times on 2 Posts

Default

Quote:
Originally Posted by Tonedef131 View Post
Who the hell turns the heat up to 83F? If I came home to an 83F thermostat that landlord would get stabbed.
Is that your scientific opinion?

The bitch of it was, I was standing there looking at the Sanyo 4912 that I haven't yet converted into a fermentation chamber...oh the agony.

Moderator, if you want to move this thread, be my guest. It's clearly not science anymore, it's just my bad luck.
__________________
wendelgee2 is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Washing yeast, starters, pre-made wort, all kinds of yeast Q's 98EXL General Techniques 15 09-06-2011 05:55 PM
Liquid Yeast--Do Kits in Sequence or Split Yeast Pack? osagedr Beginners Beer Brewing Forum 10 02-27-2010 02:24 PM
WL East Coast Ale Yeast - Who has a good all grain recipe for this yeast? Griffsta Recipes/Ingredients 7 05-16-2009 09:12 PM
Made two batches, one with huge yeast slurry, and one with dry Safale-04 yeast. Jolly McStanson General Beer Discussion 4 03-07-2009 07:23 PM
Yeast harvested from a beer yeast cake used for Apfelwein? Chello General Techniques 3 02-06-2008 09:01 PM